public class Demo {
public static void main(String args[]) {
System.out.println(123);
System.out.println(0123);
System.out.println(0x123);
}
}
123 83 291
举一反三
- 中国大学MOOC: 下列代码中构造方法的返回类型是（）public class Village { Village () { System .out .println(“hiding in Village”) ; } public static void main( String args [ ]) { Village c =new Village ( ) ;}class Village { public static void main( String args [ ]) { Village c =new Village ( ) ; } Village () { System .out .println(“hiding in Village”) ; } }
- （2-6）写出下面程序运行结果。 public class Demo { public static void main(String args[]) { int a=10,b=20; a=a^b; b=b^a; System.out.println(a); System.out.println(b); } }
- （2-6）请写出下面程序运行结果。 public class Demo { public static void main(String[] args) { int b = 011001; System.out.println(b); } }
- 下列ABCD注释标注的哪行代码有错public class Demo { public static void main(String args[]) { System.out.println("Java"); system.out.println("hello"); System.out.println("你好"); } } A: public class Demo B: public static void main(String args[]) C: system.out.println("ok"); D: System.out.println("您好");
- 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"); } }
内容
- 0
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..."); } }
- 1
【单选题】下列哪行代码有错误? public class Example{ public static void main(String args[]){ System.out.println("ok"); system.out.println("您好"); } } A. public class Example B. public static void main(String args[]) C. System.out.println("ok"); D. system.out.println("您好");
- 2
请阅读下面的程序 public class Example03 { public static void main(String args) { int x = 3; if (x > 5) { System.out.println("a"); } else { System.out.println("b"); } } } 程序的运行结果是（）
- 3
请阅读下面的程序，选择正确的运行结果。class Demo{private static int x ;public static void main(String[] args){System.out.println(x++);}}
- 4
运行下面程序段的结果是:( )。 public class MyMain{ public static void main(String args){ System.out.println(“Hello Java”); } }