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单项选择题
Which statement at Point X on line 1 allows this code to compile and run？（）

A.import java.io.PrintWtier；
B.include java.io.PrintWRiter；
C.import java.io.OutputStream Writer；
D.include java.io.OutputStream Writer；
E.No statement is needed.

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1.单项选择题
What is the Result？（）

A. baz has the value of “”.
B. baz has the value of null.
C. baz has the value of “red”
D. baz has the value of “blue”
E. baz has the value of “green”
F. The code does not compile.
G. the program throws an exception.

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2.单项选择题
What is the value of b bat line 5（）？

A. -1
B. 225
C. 127
D. Compilation will fail.
E. Compilation will succeed but the program will throw an exception at line 4.

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3.单项选择题
What is the result？（）

A. baz has a value of 0.
B. baz has a value of 1.
C. baz has the value of 2.
D. An exception is thrown.
E. The code will not compile.

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4.单项选择题
Which statement is true（）？

A. Compilation succeed and d take the value 253.
B. Line 5 contains an error that prevents compilation.
C. Line 5 throws an exception indicating “out of range”
D. Line 3 and 4 contain errors that prevent compilation.
E. The compilation succeed and d takes the value of 1.

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5.单项选择题
What is the result()？

A. The program prints “0”.
B. The program prints “4”.
C. The program prints “8”.
D. The program prints “12”.
E. The code does not compile.

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6.单项选择题
What is the result？（）

A. The program runs and prints “0”
B. The program runs and prints “1”
C. The program runs but aborts with an exception.
D. An error “possible undefined variable” at line 5 cause compilation to fail.
E. An error “possible undefined variable” at line 10 cause compilation to fail.

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7.单项选择题 1. class A {
2. public byte file Number () {
3. return l;
4. }
5. }
6.
7. Class B extends A {
8. public short getNumber() {
9. return 2;
10. }
11.
12. public short getNumber() {
13. B b = new B();
14. System.out.printIn(b.getNumber());
15. }
16. }
What is the result（）?

A. Compilation succeeds and l is printed.
B. Compilation succeeds and 2 printed.
C. An error at line 8 cause compilation to fail.
D. An error at line 14 cause complication to fail.
E. Complication succeeds but an exception is thrown at line 14.

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8.单项选择题 1. class A {
3. public String to String（） {
4. return “4”；
5. }
6. }
7. class B extends A {
8. public String toString（） {
9. return super.toString（） + “3”；
10. }
11. }
12. public class Test {
13. public static void main （String[] args） {
14. System.out.printIn（new B（））；
15. }
16. }
What is the result()？

A. Compilation succeeds and 4 is printed.
B. Compilation …………… is printed.
C. An error on line 9 cause compilation to fail.
D. An error on line 14 cause compilation to fail.
E. Compilation succeeds but an exception is thrown at line 9.

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9.多项选择题 Given：
1. public class Method Over {
2. public void set Var （int a， int b， float c） {
3. }
4. }
Which two overload the set Var method（）？

A. private void set Var（int a， float c， int b） {}
B. protected void set Var（int a， int b， float c） {}
C. public int set Var（int a， float c， int b） {return a：}
D. public int set Var（int a， int b， float c） {return a：}
E. protected float set Var（int a， int b， float c） {return c：}

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10.多项选择题Which two choices are equivalent？（）

A. 16 > 4
B. 16 / 2
C. 16 * 4
D. 16 >> 2
E. 16 / 22
F. 16 >>> 2

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