阅读以下程序，请写出代码1和代码2的运行结果 public class App3_1{ public static void main(String args[]) { int a=155; float b=20.0f; System.out.println("a="+a+",b="+b); //代码1 System.out.println("a/b="+(a/b)); //代码2 } }
举一反三
- public class E4_1{ public static void main(String args[]) { int a = 1; int b = 2; int c = 3; a += 5; b *= 4; c += a * b; c %= 6; System.out.println("a = " + a); //代码1 System.out.println("b = " + b); //代码2 System.out.println("c = " + c); //代码3 }}运行结果,代码1______ ，代码2______ ，代码3______ 。
- 说出下列B类中【代码1】，【代码2】的输出结果 class A { public int getNumber(int a) { return a+1; } } class B extends A { public int getNumber (int a) { return a+100; } public static void main (String args[]) { A a =new A(); System.out.println(a.getNumber(10)); //【代码1】 a = new B(); System.out.println(a.getNumber(10)); //【代码2】 } }
- 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”) ; } }
- 阅读下列代码 public class Test2 public static void main(String args[]) System.out.println(5/2)； 其执行结果是_________。
- 请说出E类中[代码1]和[代码2]的输出结果。 class A{ double f(int x, double y){ return x+y; } int f(int x,int y) { return x*y; } } public class E{ public static void main(String args[ ] ){ A a=new A(); System.out.println(a.f(10,10)) ; // [代码1] System.out.println(a.f (10,10.0)) ; // [代码2] } }