curso java scjp

7/29/2019 Curso Java SCJP

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SCJP

1.Java Source And Data Type

1.1.Java Source( 4 ) 1.18.Array Dimension( 7 )

1.2.Comments( 3 ) 1.19.main method( 7 )

1.3.package( 5 ) 1.20.Member Variable( 10 )

1.4.import( 6 ) 1.21.Method Variable( 8 )

1.5.static import( 3 ) 1.22.static Variable( 1 )

1.6.identifier( 14 ) 1.23.Method( 12 )

1.7.Literal( 3 ) 1.24.static Method( 1 )

1.8.Primitive Data Types( 5 ) 1.25.Parameter( 10 )

1.9.Integer( 13 ) 1.26.variable scope( 6 )

1.10.char( 7 ) 1.27.Garbage Collection( 8 )

1.11.float( 8 ) 1.28.Questions( 34 )

1.12.boolean( 3 ) 1.29.Questions( 50 )

1.13.long( 2 ) 1.30.Questions( 32 )
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rial/SCJP/0020__Java-Source-And-Data-Type/0410__variable-scope.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0410__variable-scope.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0410__variable-scope.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0140__char.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0140__char.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0140__char.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0420__Garbage-Collection.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0420__Garbage-Collection.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0420__Garbage-Collection.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0160__float.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0160__float.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0160__float.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0440__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0440__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0440__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0180__boolean.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0180__boolean.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0180__boolean.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0460__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0460__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0460__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0200__long.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0200__long.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0200__long.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0480__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0480__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0480__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0480__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0200__long.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0460__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0180__boolean.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0440__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0160__float.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0420__Garbage-Collection.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0140__char.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0410__variable-scope.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0120__Integer.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0400__Parameter.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0100__Primitive-Data-Types.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0391__static-Method.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0090__Literal.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0390__Method.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0080__identifier.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0380__static-Variable.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0061__static-import.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0360__Method-Variable.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0060__import.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0340__Member-Variable.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0040__package.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0320__main-method.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0021__Comments.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0300__Array-Dimension.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/0020__Java-Source.htmhttp://www.java2s.com/Tutorial/SCJP/0020__Java-Source-And-Data-Type/Catalog0020__Java-Source-And-Data-Type.htmhttp://www.java2s.com/Tutorial/SCJP/CatalogSCJP.htm


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1.14.double( 6 ) 1.31.Questions( 22 )

1.15.String( 3 ) 1.32.Questions( 34 )

1.16.Array( 13 ) 1.33.Questions( 36 )

1.17.Array Elements( 5 )

2.Operators

2.1.Operators( 1 ) 2.9.Conditional Operator( 5 )

2.2.Unary Operators( 8 ) 2.10.Assignment Operators( 8 )

2.3.Bitwise Operators( 9 ) 2.11.Questions( 18 )

2.4.Cast Operators( 3 ) 2.12.Questions( 20 )

2.5.Arithmatic Operators( 20 ) 2.13.Questions( 20 )

2.6.Comparison Operators( 16 ) 2.14.Questions( 38 )

2.7.instanceof Operator( 16 ) 2.15.Questions( 26 )

2.8.boolean Operators( 6 )

3.Modifiers

3.1.Access Modifiers( 6 ) 3.10.super( 3 )
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3.2.private( 3 ) 3.11.native( 1 )

3.3.default modifier( 4 ) 3.12.transient( 1 )

3.4.public( 2 ) 3.13.volatile( 1 )

3.5.protected( 3 ) 3.14.strictfp( 1 )

3.6.final( 10 ) 3.15.Questions( 18 )

3.7.abstract( 10 ) 3.16.Questions( 14 )

3.8.static( 13 ) 3.17.Questions( 28 )

3.9.this( 4 )

4.Type Casting

4.1.Type Casting( 4 ) 4.4.Array Type Casting( 9 )

4.2.Primitive Type Casting( 30 ) 4.5.Questions( 12 )

4.3.Reference Type Casting( 16 ) 4.6.Questions( 26 )

5.Statements

5.1.while( 3 ) 5.10.finally( 1 )

5.2.do while( 1 ) 5.11.Exception( 5 )
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s.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/Catalog0100__Statements.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0020__while.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0020__while.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0020__while.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0200__finally.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0200__finally.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0200__finally.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0040__do-while.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0040__do-while.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0040__do-while.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0220__Exception.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0220__Exception.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0220__Exception.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0220__Exception.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0040__do-while.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0200__finally.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0020__while.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/Catalog0100__Statements.htmhttp://www.java2s.com/Tutorial/SCJP/0080__Type-Casting/0120__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0080__Type-Casting/0060__Reference-Type-Casting.htmhttp://www.java2s.com/Tutorial/SCJP/0080__Type-Casting/0100__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0080__Type-Casting/0040__Primitive-Type-Casting.htmhttp://www.java2s.com/Tutorial/SCJP/0080__Type-Casting/0080__Array-Type-Casting.htmhttp://www.java2s.com/Tutorial/SCJP/0080__Type-Casting/0020__Type-Casting.htmhttp://www.java2s.com/Tutorial/SCJP/0080__Type-Casting/Catalog0080__Type-Casting.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0200__this.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0340__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0180__static.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0320__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0160__abstract.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0300__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0140__final.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0290__strictfp.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0100__protected.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0280__volatile.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0080__public.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0260__transient.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0060__default-modifier.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0240__native.htmhttp://www.java2s.com/Tutorial/SCJP/0060__Modifiers/0040__private.htm


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5.3.for( 16 ) 5.12.throw( 2 )

5.4.enhanced for loop( 3 ) 5.13.assert( 5 )

5.5.break( 2 ) 5.14.block( 1 )

5.6.continue( 5 ) 5.15.Questions( 40 )

5.7.if( 4 ) 5.16.Questions( 46 )

5.8.switch( 13 ) 5.17.Questions( 44 )

5.9.try catch( 5 )

6.Object Oriented

6.1.Encapsulation( 1 ) 6.10.JavaBeans( 3 )

6.2.Composition( 2 ) 6.11.enum( 14 )

6.3.Inheritance( 2 ) 6.12.interface( 2 )

6.4.overridden method( 19 ) 6.13.Questions( 64 )

6.5.overloading method( 14 ) 6.14.Questions( 60 )

6.6.Variable Length Argument( 2 ) 6.15.Questions( 42 )

6.7.Constructor( 23 ) 6.16.Questions( 48 )
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ial/SCJP/0120__Object-Oriented/0100__overloading-method.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0100__overloading-method.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0260__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0260__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0260__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0120__Variable-Length-Argument.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0120__Variable-Length-Argument.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0120__Variable-Length-Argument.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0280__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0280__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0280__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0140__Constructor.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0140__Constructor.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0140__Constructor.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0300__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0300__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0300__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0300__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0140__Constructor.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0280__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0120__Variable-Length-Argument.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0260__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0100__overloading-method.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0240__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0080__overridden-method.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0230__interface.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0060__Inheritance.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0220__enum.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0040__Composition.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0200__JavaBeans.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0020__Encapsulation.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/Catalog0120__Object-Oriented.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0180__try-catch.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0320__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0160__switch.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0300__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0140__if.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0280__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0120__continue.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0270__block.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0100__break.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0260__assert.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0080__enhanced-for-loop.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0240__throw.htmhttp://www.java2s.com/Tutorial/SCJP/0100__Statements/0060__for.htm


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6.8.Inner Classes( 33 ) 6.17.Questions( 42 )

6.9.Anonymous Class( 7 )

7.Thread

7.1.Thread Creation( 7 ) 7.8.Wait Notify( 4 )

7.2.Thread Starting( 5 ) 7.9.Synchronize( 6 )

7.3.Thread Priority( 4 ) 7.10.Questions( 32 )

7.4.Daemon Threads( 1 ) 7.11.Questions( 30 )

7.5.Thread Join( 1 ) 7.12.Questions( 22 )

7.6.Yielding( 1 ) 7.13.Questions( 26 )

7.7.Sleeping( 2 ) 7.14.Questions( 22 )

8.Utility Classes

8.1.Object( 2 ) 8.18.SortedSet( 5 )

8.2.equals method( 3 ) 8.19.Comparable( 1 )

8.3.toString method( 2 ) 8.20.Map( 18 )

8.4.hashCode( 1 ) 8.21.Arrays( 4 )
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tp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0340__Comparable.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0060__toString-method.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0060__toString-method.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0060__toString-method.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0360__Map.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0360__Map.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0360__Map.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0070__hashCode.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0070__hashCode.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0070__hashCode.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0370__Arrays.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0370__Arrays.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0370__Arrays.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0370__Arrays.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0070__hashCode.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0360__Map.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0060__toString-method.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0340__Comparable.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0040__equals-method.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0320__SortedSet.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0020__Object.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/Catalog0160__Utility-Classes.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0260__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0120__Sleeping.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0240__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0100__Yielding.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0220__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0090__Thread-Join.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0200__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0080__Daemon-Threads.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0180__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0060__Thread-Priority.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0160__Synchronize.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0040__Thread-Starting.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0140__Wait-Notify.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/0020__Thread-Creation.htmhttp://www.java2s.com/Tutorial/SCJP/0140__Thread/Catalog0140__Thread.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0180__Anonymous-Class.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0320__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0120__Object-Oriented/0160__Inner-Classes.htm


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8.5.clone method( 1 ) 8.22.generics( 13 )

8.6.Math class( 26 ) 8.23.Scanner( 3 )

8.7.String class( 27 ) 8.24.Regex( 11 )

8.8.StringBuffer( 12 ) 8.25.Formatter( 19 )

8.9.Wrapper classes( 30 ) 8.26.Date( 7 )

8.10.Boxing Unboxing( 18 ) 8.27.Iterator( 2 )

8.11.Collection( 13 ) 8.28.Runtime( 1 )

8.12.Collections( 4 ) 8.29.System( 3 )

8.13.List( 8 ) 8.30.Questions( 36 )

8.14.Vector( 1 ) 8.31.Questions( 38 )

8.15.LinkedList( 1 ) 8.32.Questions( 40 )

8.16.Set( 4 ) 8.33.Questions( 38 )

8.17.TreeSet( 4 ) 8.34.Questions( 38 )

9.File

9.1.File( 17 ) 9.5.Serialization( 7 )
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s.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0500__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0280__Set.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0280__Set.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0280__Set.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0520__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0520__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0520__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0300__TreeSet.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0300__TreeSet.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0300__TreeSet.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0540__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0540__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0540__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/Catalog0180__File.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/Catalog0180__File.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/Catalog0180__File.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/0020__File.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/0020__File.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/0020__File.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/0100__Serialization.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/0100__Serialization.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/0100__Serialization.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/0100__Serialization.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/0020__File.htmhttp://www.java2s.com/Tutorial/SCJP/0180__File/Catalog0180__File.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0540__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0300__TreeSet.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0520__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0280__Set.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0500__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0260__LinkedList.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0480__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0240__Vector.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0460__Questions.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0220__List.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0445__System.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0210__Collections.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0444__Runtime.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0200__Collection.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0442__Iterator.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0180__Boxing-Unboxing.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0441__Date.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0160__Wrapper-classes.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0440__Formatter.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0140__StringBuffer.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0420__Regex.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0120__String-class.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0400__Scanner.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0100__Math-class.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0380__generics.htmhttp://www.java2s.com/Tutorial/SCJP/0160__Utility-Classes/0080__clone-method.htm


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9.2.RandomAccessFile( 5 ) 9.6.Questions( 50 )

9.3.Stream( 8 ) 9.7.Questions( 14 )

9.4.Reader( 2 ) 9.8.Questions( 56 )

1.Java Source And Data TypeJava Source

1.1.Java Source

1.1.1.Source Files

All Java source files must endwith the .java extension.

A source file should contain one top-levelpublic class.

If apublic class is present, the class name must match the unextended filename.

A source file may contain an unlimited number of non-public classes.

A file can have only onepackage statement, but multiple imports.

Traduccin:

Todos los archivos fuente de Java deben terminar con la extensin de java.

Un archivo de origen debe contener una clase pblica de nivel superior.

Si una clase pblica est presente, el nombre de la clase debe coincidir con el nombre de archivo sin extensin.

Un archivo de origen puede contener un nmero ilimitado de clases no pblicas.

Un archivo puede tener slo una sentencia package, pero mltiples importaciones.
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1.1.2. Three top-level compilation units may appear in a file.Tres unidades de compilacin de nivel superior pueden aparecer en un archivo

1.Package declaration

2.Import statements

3.Class, interface, and enumdefinitions

Traduccin:

1.Package declaracin

2. declaraciones de Import

3. Class, interfaz y enumeracin definiciones

Ejemplo:

package com.java2s.com;

import java.util.List;

public class MainClass{

private int iValue;

}

1.1.3. Three top-level compilation units are not all required.

Tres unidades de compilacin de nivel superior no son todos los necesarios.


public class MainClass{private int iValue;

}

1.1.4. If three top-level compilation units are present, then they must appear in the

following order


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Si tres unidades de compilacin de primer nivel estn presentes, entonces deben aparecer en elsiguiente orden

1.Package declaration

2.Import statements3.Class, interface, and enumdefinitions

If no apackage statement, import statement(s) must be the first lin

e(s) in the source code file.

If nopackage or import statements, the class declaration must be the first in the source

code file.

Import andpackage statements apply to all classes within a source code file.

There's no way to declare multiple classes in a file and have them in different packages,

or use different imports.Traduccin:

Si no hay un comunicado conjunto, la declaracin de importacin (s) debe ser la primera

lnea (s) en el archivo de cdigo fuente.

Si no hay paquetes o importacin declaraciones, la declaracin de la clase debe ser el

primero en el archivo de cdigo fuente.

Declaraciones de importacin y el paquete se aplican a todas las clases en un archivo de

cdigo fuente.

No hay manera de declarar varias clases en un archivo y tenerlos en diferentes paquetes, o

utilizar diferentes importaciones.

package com;



private int iValue;}

1.2.Comments

1.2.1. Java provides three styles of comments

Java provee tres estilos de comentarios.


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/* This is a

multiline comment. */

// This is a single-line comment.

/** This is a

multiline javadoc comment */

The first comment style supports traditional C-language comments.

The second comment style supports single line C++ comments.

The third comment style is used by the javadoc documentation genera

tion tool.

Traduccin:El primer estilo de comentario soportado tradicionalmente en el languaje C comentarios.

El segundo estilo de comentario sportado en una lnea C++ Comentario.

El tercer estilo de comentario es usado por el javadoc documentation generation tool.

/*

File header

*/

public class MainClass{/**

This is a method

*/

public static voidmain(String[] argv){

// output

System.out.println();


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}

}

1.2.2. Comments cannot be nested.

Los comentarios no pueden anidarse.

If comments appear within a String or character literal,

they are treated as part of the String or literal.

Traduccin:

Si el comentario aparece con un String o carcter literal, ellos son tratados comoparte del String o literal.



System.out.println("/* comments */");

}

}

1.2.3. Comments can appear at the beginning or end of any line in the source

code file

Los comentarios pueden aparecer al inicio o al fin de

cualquier linea en el codigo fuente del fichero.

Comments are independent of any of the positioning rules.Traduccin:Comentarios son independientes de cualquiera de las reglas de posicionamiento.


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}// End of main method

}

1.3.package

1.3.1. The package name is a series of elements separated by periods.

Los nombres de los paquetes es una serie de elementos separados por periodos.

Thepackage statement must be the first non-

comment line in a source file.

Traduccin:Las declaraciones de paquetes debe de ser en la primera lnea no comentario en un

archivo origen.

package com.yourcompanyname.application;


private int iValue;

}1.3.2.Packages are identified by the package statement.

Los paquetes son identificados por la sentencia de declaracin del paquete

package packageName;



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}

}

1.3.3. Use only alphanumeric characters in package names.

Usar solo caracteres alfanumricos en nombres de paquetes.

package com.yourcompanyname.application;

//package com//yourcompanyname\\application; // error



1.3.4. java.lang package is imported by default and does not need to be imported

by an import statement.

El paquete java.lang is importado por default y este no necesita ser importado por un

sentencia de import.public class MainClass{


System.out.println(java.lang.Integer.toString(1));

System.out.println(Integer.toString(2));

}

}


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1.3.5.Other than java.lang, every other package you use must be named in animport statement

Otro que java.lang, cada otro paquete que usa debe ser

nombrado in cada sentencia import.

Or you must use the fully qualified name of the class every ti

me it is mentioned.Traduccin:

O debe utilizar el nombre completo de la clase cada vez que se menciona.

import java.util.Vector;

public class MainClass {

public static voidmain(String[] argv) {

System.out.println(new Vector());

System.out.println(new java.util.ArrayList());

}

}

1.4.import

1.4.1. You may import either an individual class from a package or the entire package.

To import an individual class


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To import an entire package, simply add an asterisk (*) to the end

of thepackage name.

import java.util.*;

public class MainClass{private int iValue;

}

1.4.2.White space and comments may appear before or after any of these elements.

// Package declaration

package exam.prepguide;

// Imports

import java.awt.Button; // imports a specific class

import java.util.*; // imports an entire package

// Class definition

public class Test {

// class body

}


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1.4.3.To use classes with the same name in two different packages

import java.util.*;

import java.sql.*;


//Date date = new Date(); // error

java.util.Date date = new java.util.Date();

}

1.4.4.Reference class without importingpublic class MainClass{

java.util.Vector vec = new java.util.Vector();

}

1.4.5.Reference class with importing

import java.util.Vector;


Vector vec = new Vector();

}

1.4.6.Java compiler automatically imports all the classes in the java.lang package into every source file.


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java.lang.String s = new String();

System.out.println(s);}

}

1.5.static import

1.5.1. Java's static import facility allows you to import static data and methods.

import static java.awt.Color.GREEN;

import java.awt.Color;


Color myColor = GREEN;

}

1.5.2.Use the * notation to import all accessible constants from a class.

import java.awt.Color;import static java.awt.Color.*;


Color myColor = GREEN;

}

1.5.3.Static importing gives you access to static methods


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import java.awt.Color;

import static java.awt.Color.GREEN;

import static java.awt.Color.getColor;

public class MainClass{Color myColor = GREEN;

public static voidmain(String[] a){

getColor(null);

}

}

SCJPOperatorsOperators

2.1.Operators

2.1.1. Precedence of Numeric Operators

Precedencia de Operadores numricos

Precedence Operator Description
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1 ++ Increment by 1 (or 1.0)

1 -- Decrement by 1 (or 1.0)

1 + Unary plus

1 - Unary minus

2 * Multiplication

2 / Division

2 % Modulo

3 + Addition

3 - Subtraction

5 < Less than

5 > Greater than

5 = Greater than/equal

6 == Equal (identical values)

6 != Not equal to

13 op= op assignment (+=, -=, *=, and so on)

2.2.Unary Operators

2.2.1. Unary operators take only a single operand.

Los operadores unarios tienen un solo operando.
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Java provides seven unary operators:

The increment and decrement operators: ++ and --

The unary plus and minus operators: + and -

The bitwise inversion operator: ~Theboolean complement operator: !

The cast: ()

Java proporciona siete operadores unarios:

Los operadores de incremento y decremento: ++ y --

Los unarios ms y menos operadores: + y -

El operador de inversin de bit a bit: ~

El operador de complemento booleano:

El cast: ()


public static voidmain(){

//The ++ and -- operators modify the value of an expression by adding or subtracting 1.

double d=0.12345D;

d++;

System.out.println(d);

}

}

1.12345

2.2.2.The unary operators are used to increment, decrement,or change the sign of a value.


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Los Operadores Unarios son usados para incrementar, decrementar y cambiar el signo del valor



int i = 1;

i = -i;//The - unary operator changes the sign of a value.

System.out.println(i);

}

}

-1

2.2.3. Increment and Decrement

Incremento y decremento



int x = 5;

int y = x++; // y gets the value 5, before incrementing x

int y2 = ++x; // y2 gets the value 7, after incrementing

}

}


public static voidmain(){

//The ++ and -- operators modify the value of an expression by adding or

//subtracting 1.

int i=0;

i++;

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--i;


}}

1

0

2.2.4.

+ and - operators are applied to a value of byte, char, and short types, the value is converted to anint.+ y - son operadores aplicados para el valores de byte, carcter y tipos cortos, el valor es

convertido a un entero.public class MainClass{


byte b = 1;

byte b1 = (byte)-b;

}

}

2.2.5. The ++ operators may appear before the value (prefix) or after the value (postfix).

++x (prefix)

x++ (postfix)

--x (prefix)
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x-- (postfix)

Examples of Pre-and Post- Increment and Decrement Operations

Initial Value of x Expression y x

5 y = x++ 5 6

5 y = ++x 6 6

5 y = x-- 5 4

5 y = --x 4 4

When using a prefix expression, the value returned is the value that is calculated

after the prefix operator is applied.

Cuando se usa un prefijo de expresin, el valor devuelto es el valor que se calcula

despus se aplica el operador de prefijo.

When using a postfix expression, the value returned is the value of the expression before

the postfix operator is applied.

Cuando se utiliza una expresin Postfix, el valor devuelto es el valor de la expresin anterior

se aplica el operador de sufijo.



int x = 10;

int y = ++x; // The value assigned to y is 11

System.out.println(x);

System.out.println(y);


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x = 10;

y = x++; // The value assigned to y is 10



x = 10;

y = --x; // The value assigned to y is 9



x = 10;

y = x--; // The value assigned to y is 10



}

}

11

11

11

10

9

9

9

10

2.2.6.preincrement or pre-decrement, post-increment or post-decrementpre incremento y pre decremento, post incremento or post decremento
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int i = 0;

int y = 0;

y = i++;



}

}

1

0



int i = 0;int y = 0;

y = ++i;



}

}

1

1



int i = 0;

int y = 0;

y = i--;



}

}

-1

0


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int i = 0;

int y = 0;

y = --i;



}

}

-1

-1

2.2.7. mixing the increment and decrement operators with other operators



int x = 2; int y = 3;

if ((y == x++) | (x < ++y)) {

System.out.println("x = " + x + " y = " + y);

}}

}

x = 3 y = 4
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2.2.8. increment or decrement operators on a f inal variable.



final int x = 5;int y = x++;

}

}

The final local variable x cannot be assigned. It must be blank and not

using a compound

assignment
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