以下程序正确的输出是（）package test;public class ...ew ChildClass();}}
举一反三
- 下列哪个选项的java源文件代码片段是不正确的 A: package testpackage； public class Test{ } B: import jav i *； package testpaekage； public class Test { } C: import javi*； class Person { } public class Test { } D: import javi*； import jav aw*； public class Test{ }
- 下面哪些代码段是正确的Java源程序？ A: package testpackage; public class Test{//do something...} B: import java.io.*; package testpackage; public class Test{// do something...} C: import java.io.*; class Person{// do something...} public class Test{// do something...} D: import java.io.*; import java.awt.*; public class Test{// do something...}
- 下面哪些代码段是正确的Java源程序？（ ） A: import java.io.*; package testpackage; public class Test{/* do something... */} B: import java.io.*;class Person{/* do something... */}public class Test{/* do something... */} C: import java.io.*; import java.awt.*; public class Test{/* do something... */} D: package testpackage;public class Test{/* do something... */}
- 父类和子类定义如下： class FatherClass { public FatherClass() { System.out.println("FatherClass Create"); } } class ChildClass extends FatherClass { public ChildClass() { System.out.println("ChildClass Create"); } public static void main(String[] args) { FatherClass fc = new FatherClass(); ChildClass cc = new ChildClass(); } }请问输出结果为：
- 下列哪个选项的java源文件代码片段是不正确的（ ）。 A: package mypackage; public class Test{ } B: import java.io.*; class Person{ } C: C. import java.io.*; package mypackage; public class Test{ } D: import java.io.*;import java.awt.*;public class Test{ }