单项选择题

下列选项成员变量声明正确的是

A．public protected final int i；
B．abstract class F1...
C．private double height；
D．double weight

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单项选择题

下面程序段的输出结果是 class Test public static void main(String args[]) MyThread t=new MyThread()； t.displayOutput( t has been createD) ; t.start(); class MyThread extends Thread public void displayOutput(String s) System.out.println(s); public void nm() displayOutput( t is running. );

A．t has been created.
t is running.
B．t has been created.
C．t is running.
D．编译出错

单项选择题

能将程序补充完整的选项是 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； _____

A．i=m
B．i=b
C．i=p.a
D．i=p.change(50)

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