public class X { public X aMethod() { return this;} } public class Y extends X { } Which two methods can be added to the definition of class Y?()
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阅读以下代码: public class Test{ public static void main(){ System.out.println(“x=”+x); } } 请问,代码运行的结果是?()
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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?()
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1. public class Test { 2. int x= 12; 3. public void method(int x) { 4. x+=x; 5. System.out.println(x); 6. } 7. } Given: 34. Test t = new Test(); 35. t.method(5); What is the output from line 5 of the Test class?()
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public class Parent{ public void change(int x){} } public class Child extends Parent{ //覆盖父类change方法 } 下列哪个声明是正确的覆盖了父类的change方法?()
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1.public class Test{ 2.int x=12; 3.public void method(intx){ 4.x+=x; 5.System.out.println(x); 6.} 7.} Given: 34.Test t=new Test(); 35.t.method(5); What is the output from line 5 of the Test class?()
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public class ConstOver { public ConstOver (int x, int y, int z) { } } Which two overload the ConstOver constructor? ()
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现有 public class Parentt public void change (int x){) ) public class Child extends Parent{ //覆盖父类change方法 } 下列哪个声明是正确的覆盖了父类的change方法?()
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public class ConstOver { public ConstOver (int x, int y, int z) { } } Which two overload the ConstOver constructor?()
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现有2个文件: package x; public class X{ public static void doX() {System.out.print("doX");} } 和: class Find{ public static void main(String [] args) { //insert code here } } 哪两行分别插入到类Find的第3行将编译并产生输出“doX”?()
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读代码:public class ExceptionTest {class TestException extends Exception {}public void runTest () throws TestException {}public void test () /* Point X*/ {runTest ();}}第4行//point X 位置, 加哪行代码能让代码可编译
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以下程序运行时输入:java Test3 12 34public class Test3 {public static void main(String x[]){System.out.println(x[0] + x[1]);}}则运行结果为?
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请看如下代码 class Person {private int a;public int change(int m){return m;}}public class Teacher extends Person{public int b;public static void main(String arg[]){Person p = new Person();Teacher t = new Teacher();int i;// point x}}下面哪些放在// point x?行是正确的?
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下面程序段的输出结果为package test;public class Class A{ int x=20; static int y=6; public
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有以下程序: public class ConstOver { public ConstOver (int x, int y, int z) { } } 下面
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