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单项选择题 Given:

What is the result？（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes and prints "running".
D.The code executes and prints "runningrunning".
E.The code executes and prints "runningrunningrunning".

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1.单项选择题 Given：

What is the result？（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes normally and prints "sleep".
D.The code executes normally， but nothing is printed.

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2.单项选择题 Given：

What is the result？（）

A.Afoo Afoo
B.Afoo Bfoo
C.Bfoo Afoo
D.Bfoo Bfoo
E.Compilation fails

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3.多项选择题 Click the Exhibit button.

Which three statements are true？（）

A.Compilation fails.
B.The code compiles and the output is 2.
C.If lines 16， 17 and 18 were removed， compilation would fail.
D.If lines 24， 25 and 26 were removed， compilation would fail.
E.If lines 16， 17 and 18 were removed， the code would compile and the output would be 2.
F.If lines 24， 25 and 26 were removed， the code would compile and the output would be 1.

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4.单项选择题 Given：

What is the result？（）

A.Compilation succeeds.
B.Compilation fails due to multiple errors.
C.Compilation fails due to an error only on line 20.
D.Compilation fails due to an error only on line 21.
E.Compilation fails due to an error only on line 22.

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5.单项选择题 Click the Exhibit button.

What is the result？（）

A.go in Goban go in Sente go in Sente
B.go in Sente go in Sente go in Goban
C.go in Sente go in Goban go in Goban
D.go in Goban go in Goban go in Sente

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6.单项选择题 Given:

Which statement is true？（）

A.The code will compile without changes.
B.The code will compile if public Tree（） { Plant（）； } is added to the Tree class.
C.The code will compile if public Plant（） { Tree（）； } is added to the Plant class.
D.The code will compile if public Plant（） { this（"fern"）； } is added to the Plant class.
E.The code will compile if public Plant（） { Plant（"fern"）； } is added to the Plant class.

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7.多项选择题Which two code fragments correctly create and initialize a static array of int elements？（）

A.static final int[] a = { 100，200 }；
B.static final int[] a； static { a=new int[2]； a[0]=100； a[1]=200； }
C.static final int[] a = new int[2]{ 100，200 }；
D.static final int[] a； static void init（） { a = new int[3]； a[0]=100； a[1]=200； }

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8.单项选择题 Click the Exhibit button.

What is the result？（）

A.Line 26 prints "a" to System.out.
B.Line 26 prints "b" to System.out.
C.An exception is thrown at line 26 at runtime.
D.Compilation of class A will fail due to an error in line 6.

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9.多项选择题 Given.

Which two statements are true？（）

A.Foo.beta（） is a valid invocation of beta（）.
B.Foo.alpha（） is a valid invocation of alpha（）.
C.Method beta（） can directly call method alpha（）.
D.Method alpha（） can directly call method beta（）.

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10.单项选择题 Given：

What is the result when the programmer attempts to compile the code and run it with the command java Converter 12？（）

A.It is true that j==i.
B.It is false that j==i.
C.An exception is thrown at runtime.
D.Compilation fails because of an error in line 13.

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