单选题5. class Passer3 {   6. final static Passer3 p2 = new Passer3();   7. public static void main(String [] args) {   8. Passer3 p4 = p2.go(p2);   9. Passer3 p3 = p2;   10. System.out.print(p3==p4);   11. }   12. Passer3 go(Passer3 p) {   13. p = new Passer3();   14. return p;   15. }   16. }   结果为:()AtrueBfalseC第 8 行出现一个错误,编译失败D第 9 行出现一个错误,编译失败

单选题
5. class Passer3 {   6. final static Passer3 p2 = new Passer3();   7. public static void main(String [] args) {   8. Passer3 p4 = p2.go(p2);   9. Passer3 p3 = p2;   10. System.out.print(p3==p4);   11. }   12. Passer3 go(Passer3 p) {   13. p = new Passer3();   14. return p;   15. }   16. }   结果为:()
A

true

B

false

C

第 8 行出现一个错误,编译失败

D

第 9 行出现一个错误,编译失败


参考解析

解析: 暂无解析

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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 int(){a=new int[3];a[0]=100;a[1]=200;}

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单选题class Passer {  static final int x = 5;  public static void main(String [] args) { new Passer().go(x);  System.out.print(x);  }  void go(int x) {  System.out.print(++x);  }  }  结果是什么?()A55B56C65D66

单选题1. public class A {  2. void A() {  3. System.out.println(“Class A”);  4. }  5. public static void main(String[] args) {  6. new A();  7. }  8. }  What is the result?()A Class AB Compilation fails.C An exception is thrown at line 2.D An exception is thrown at line 6.E The code executes with no output.

单选题1. class Pizza {  2. java.util.ArrayList toppings;  3. public final void addTopping(String topping) {  4. toppings.add(topping); 5. }  6. }  7. public class PepperoniPizza extends Pizza {  8. public void addTopping(String topping) {  9. System.out.println(”Cannot add Toppings”);  10. }  11. public static void main(String[] args) {  12. Pizza pizza = new PepperoniPizza();  13. pizza.addTopping(”Mushrooms”);  14. }  15. }  What is the result?()A Compilation fails.B Cannot add ToppingsC The code runs with no output.D A NullPointerException is thrown in Line 4.

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