题目内容
有以下方法的定义,请选择该方法的返回类型(D)ReturnType method(byte x, double y) {return (short)x/y*2;}
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以下代码的输出结果为:()public class Test { public static void main(String[] args) { Object o1 = new Object(); Object o2 = new Object(); System.out.print((o1 == o2) + " " + (o1.equals(o2))); }
int x, b=0; for(x = 0; x <= 5; ++x){ if (x == 2) break; ++b; }
给出以下程序:1. public class Electronic implements Device2.{ public void doIt() { } }3. abstract class Phone1 extends Electronic { }5. abstract class Phone2 extends Electronic6.{ public void doIt(int x) { } }7. class Phone3 extends Electronic implements Device8.{ public void doStuff() { } }9. interface Device { public void doIt(); }程序输出结果为?()
给出下面的代码()class Person{String name,department;public void printValue(){System.out.println("name is"+name);}}public class Teacher extends Person{int salary;public void printValue(){_______________________System.out.println("salary is"+ salary);}}}下面的哪个表达式可以加入到Teacher类的printValue()方法中.
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