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单选题
package foo； public class Outer { public static class Inner { } } Which statement is true？（）
A
Compilation fails.
B
An instance of the Inner class can be constructed with “new Outer.Inner（）”.
C
An instance of the Inner class cannot be constructed outside of package foo.
D
An instance of the Inner class can be constructed only from within the Outer class.
E
From within the package foo， and instance of the Inner class can be constructed with “new Inner（）”.
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更多 “单选题package foo； public class Outer { public static class Inner { } } Which statement is true？（）A Compilation fails.B An instance of the Inner class can be constructed with “new Outer.Inner（）”.C An instance of the Inner class cannot be constructed outside of package foo.D An instance of the Inner class can be constructed only from within the Outer class.E From within the package foo， and instance of the Inner class can be constructed with “new Inner（）”.” 相关考题
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package foo； public class Outer { public static class Inner { } } Which statement is true？（） A、 Compilation fails.B、 An instance of the Inner class can be constructed with “new Outer.Inner（）”.C、 An instance of the Inner class cannot be constructed outside of package foo.D、 An instance of the Inner class can be constructed only from within the Outer class.E、 From within the package foo， and instance of the Inner class can be constructed with “new Inner（）”.
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public class Base { public static final String FOO = “foo”； public static void main（String[] args） { Base b = new Base（）； Sub s = new Sub（）； System.out.print（Base.FOO）； System.out.print（Sub.FOO）； System.out.print（b.FOO）； System.out.print（s.FOO）； System.out.print（（（Base）s）.FOO）； } } class Sub extends Base {public static final String FOO=bar；} What is the result？（） A、 foofoofoofoofooB、 foobarfoobarbarC、 foobarfoofoofooD、 foobarfoobarfooE、 barbarbarbarbarF、 foofoofoobarbarG、 foofoofoobarfoo
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考题
单选题Which declaration prevents creating a subclass of an outer class？（）A
Static class FooBar{}B
Private class FooBar{}C
Abstract public class FooBar{}D
Final public class FooBar{}E
Final abstract class FooBar{}
考题
单选题public class Test { public static void main （String args） { class Foo { public int i = 3； } Object o = （Object） new Foo（）； Foo foo = （Foo）o； System.out.printIn（foo. i）； } } What is the result？（）A
Compilation will fail.B
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Compilation will succeed but the program will throw a ClassCastException at line 6.D
Compilation will succeed but the program will throw a ClassCastException at line 7.
考题
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Foo { public int bar（） { return 1； } }B
new Foo { public int bar（） { return 1； } }C
newFoo（） { public int bar（）{return 1； } }D
new class Foo { public int bar（） { return 1； } }
考题
单选题package geometry； public class Hypotenuse { public InnerTriangle it = new InnerTriangle（）； class InnerTriangle { public int base； public int height； } } Which is true about the class of an object that can reference the variable base？ （）A
It can be any class.B
No class has access to base.C
The class must belong to the geometry package.D
The class must be a subclass of the class Hypotenuse.
考题
单选题package com.sun.sjcp； public class Commander{ public static void main（String[]args）{ //more code here } } Assume that the class fileis located in /foo/com/sun/sjcp/，the current directory is/foo/，and that the classpath contains“.“（current directory）. Which command line correctly runs Commander？（）A
java CommanderB
java com.sim.sjcp.CommanderC
java com/sun/sjcp/CommanderD
java-cpcom.sun.sjcp CommanderE
java-cpcom/sun/sjcp Commander
考题
单选题public class Test { public static void main（String args[]） { class Foo { public int i = 3； } Object o = （Object）new Foo（）； Foo foo = （Foo）o； System.out.println（“i = “ + foo.i）； } } What is the result？（）A
i = 3B
Compilation fails.C
A ClassCastException is thrown at line 6.D
A ClassCastException is thrown at line 7.
考题
单选题package foo； public class Outer （ public static class Inner （ ） ） Which statement is true？ （）A
An instance of the Inner class can be constructed with “new Outer.Inner （）”B
An instance of the inner class cannot be constructed outside of package foo.C
An instance of the inner class can only be constructed from within the outer class.D
From within the package bar， an instance of the inner class can be constructed with “new inner（）”
考题
单选题package test1； public class Test1 { static int x = 42； } package test2； public class Test2 extends test1.Test1 { public static void main（String[] args） { System.out.println（“x = “ + x）； } } What is the result？（）A
x = 0B
x = 42C
Compilation fails because of an error in line 2 of class Test2.D
Compilation fails because of an error in line 3 of class Test1.E
Compilation fails because of an error in line 4 of class Test2.
考题
单选题package foo； public class Outer { public static class Inner { } } Which statement is true？（）A
Compilation fails.B
An instance of the Inner class can be constructed with “new Outer.Inner（）”.C
An instance of the Inner class cannot be constructed outside of package foo.D
An instance of the Inner class can be constructed only from within the Outer class.E
From within the package foo， and instance of the Inner class can be constructed with “new Inner（）”.
考题
单选题Given a correctly compiled class whose source code is： package com.sun.sjcp； public class Commander { public static void main（String[] args） { // more code here } } Assume that the class file is located in /foo/com/sun/sjcp/， the current directory is /foo/， and that the classpath contains “.“ （current directory）. Which command line correctly runs Commander？（）A
java CommanderB
java com. sim. sjcp.CommanderC
java com/sun/sjcp/CommanderD
java -cp com.sun.sjcp CommanderE
java -cp com/sun/sjcp Commander
考题
单选题public class Base { public static final String FOO = “foo”； public static void main（String[] args） { Base b = new Base（）； Sub s = new Sub（）； System.out.print（Base.FOO）； System.out.print（Sub.FOO）； System.out.print（b.FOO）； System.out.print（s.FOO）； System.out.print（（（Base）s）.FOO）； } } class Sub extends Base {public static final String FOO=bar；} What is the result？（）A
foofoofoofoofooB
foobarfoobarbarC
foobarfoofoofooD
foobarfoobarfooE
barbarbarbarbarF
foofoofoobarbarG
foofoofoobarfoo
考题
多选题class One { public One foo（） { return this； } } class Two extends One { public One foo（） { return this； } } class Three extends Two { // insert method here } Which two methods， inserted individually， correctly complete the Three class？（）Apublic void foo（） { }Bpublic int foo（） { return 3； }Cpublic Two foo（） { return this； }Dpublic One foo（） { return this； }Epublic Object foo（） { return this； }
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