摘要：
System.out.println(Math.PI);//获取PI的值 System.out.println(Math.E);//常量E int min = Math.min(5, 4);//求最小值 System.out.println(min); int max = Math.max(5, 4 阅读全文
摘要：
public class MyEnum { private final String name; public static final MyEnum red = new MyEnum("红色"); public static final MyEnum green = new MyEnum("绿色" 阅读全文