下列程序运行结果是( ) public class Demo { public static void main(String[] args) { Demo demo = new Demo(); demo.show(new Car() { public void run() { System.out.println("demo run"); } }); } public void show(Car c) { c.run(); } }abstract class Car { public void run() { System.out.println("car run..."); } }
下列程序运行结果是( ) public class Demo { public static void main(String[] args) { Demo demo = new Demo(); demo.show(new Car() { public void run() { System.out.println("demo run"); } }); } public void show(Car c) { c.run(); } }abstract class Car { public void run() { System.out.println("car run..."); } }
下列程序的运行结果是( )class Demo{private String name;Demo(String name){this.name = name;}private static void show(){System.out.println(name)}public static void main(String[] args){Demo d = new Demo(“lisa”);d.show();}}
下列程序的运行结果是( )class Demo{private String name;Demo(String name){this.name = name;}private static void show(){System.out.println(name)}public static void main(String[] args){Demo d = new Demo(“lisa”);d.show();}}
下列哪个函数是对父类Demo的函数show的正确覆盖class Demo{ int show(int a,int b){ return 0; } } A: private int show(int a,int b){ return 0; } B: public int show(int a,int b){ return 0; } C: static int show(int a,int b){ return 0; } D: public int show(int a,long b){ return 0; }
下列哪个函数是对父类Demo的函数show的正确覆盖class Demo{ int show(int a,int b){ return 0; } } A: private int show(int a,int b){ return 0; } B: public int show(int a,int b){ return 0; } C: static int show(int a,int b){ return 0; } D: public int show(int a,long b){ return 0; }
定义类Block和类Demo,运行Demo的输出结果是。 class Block{ {//代码1 System.out.print("1"); } static{//代码2 System.out.print("2"); } {//代码3 System.out.print("3"); } public Block() {//代码4 System.out.print("4"); } static void show() {//代码5 System.out.print("5"); } static {//代码6 System.out.print("6"); } } //定义测试类Demo public class Demo { public static void main(String[] args) { new Block().show(); new Block() } }
定义类Block和类Demo,运行Demo的输出结果是。 class Block{ {//代码1 System.out.print("1"); } static{//代码2 System.out.print("2"); } {//代码3 System.out.print("3"); } public Block() {//代码4 System.out.print("4"); } static void show() {//代码5 System.out.print("5"); } static {//代码6 System.out.print("6"); } } //定义测试类Demo public class Demo { public static void main(String[] args) { new Block().show(); new Block() } }
下列程序运行结果是 public class Demo { public static void main(String[] args) { Object obj=new Father(){ public void show(){ System.out.println("helloworld"); } }; obj.show(); } } class Father{ public void show(){ System.out.println("hello father"); } }
下列程序运行结果是 public class Demo { public static void main(String[] args) { Object obj=new Father(){ public void show(){ System.out.println("helloworld"); } }; obj.show(); } } class Father{ public void show(){ System.out.println("hello father"); } }
以下哪一个是类选择器? A: demo B: .demo C: demo D: >demo
以下哪一个是类选择器? A: demo B: .demo C: demo D: >demo
有一个类Demo,对与其构造方法的正确声明是() A: void Demo(){…} B: Demo(){…} C: Demo Demo(){…} D: int Demo(){}
有一个类Demo,对与其构造方法的正确声明是() A: void Demo(){…} B: Demo(){…} C: Demo Demo(){…} D: int Demo(){}
下列程序运行结果是( ) public class Demo { public static void main(String[] args) { Object obj=new Father(){ public void show(){ System.out.println("helloworld"); } }; obj.show(); } } class Father{ public void show(){ System.out.println("hello father"); } }
下列程序运行结果是( ) public class Demo { public static void main(String[] args) { Object obj=new Father(){ public void show(){ System.out.println("helloworld"); } }; obj.show(); } } class Father{ public void show(){ System.out.println("hello father"); } }
戏剧产品入口级别DEMO课分别是() A: D1 demo B: D1 demo & D2 demo C: D2 demo
戏剧产品入口级别DEMO课分别是() A: D1 demo B: D1 demo & D2 demo C: D2 demo
在Demo类中 public class Demo{ public Demo(){} public void Demo(int x){} } 构造方法Demo重载了
在Demo类中 public class Demo{ public Demo(){} public void Demo(int x){} } 构造方法Demo重载了