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//这是java的快速入门, 演示java的开发步骤
//对代码的相关说明
//1. public class Hello 表示Hello是一个类,是一个public公有的类
//2. Hello{ } 表示一个类的开始和结束
//3. public static void main(String[] args) 表示一个主方法,即我们程序的入口
//4. main() {} 表示方法的开始和结束
//5. System.out.println("hello,world~"); 表示输出"hello,world~"到屏幕
//6. ;表示语句结束
public class Hello {
//编写一个main方法
public static void main(String[] args) {
System.out.println("timerring hello");
}
}
//一个源文件中最多只能有一个public类。其它类的个数不限。[演示]
//Dog 是一个类
//编译后,每一个类,都对于一个.class
class Dog {
//一个源文件中最多只能有一个public类。其它类的个数不限,也可以将main方法写在非public类中,
//然后指定运行非public 类,这样入口方法就是非public 的main方法
public static void main(String[] args) {
System.out.println("hello, 狗狗");
}
}
class Tiger {
public static void main(String[] args) {
System.out.println("hello, 老虎");
}
}
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