枚举初步认识

public enum ColorEnum {
	RED,BLUE
}
public class EnumDemo {
	public static void main(String[] args) {
		System.out.println(ColorEnum.BLUE);
	}
}

console:BLUE

public enum ColorEnum2 {
	RED("红色",1),
	BLUE("蓝色",2),
	GRAY("灰色",3);
	
	private String name;
	private int value;
	
	private ColorEnum2(String name,int value){
		this.name=name;
		this.value=value;
	}
	public static String getName(int index) {
		for (ColorEnum2 c : ColorEnum2.values()) {
			if(c.getValue()==index){
				return c.name;
			}
		}
		return null;
	}
	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getValue() {
		return value;
	}

	public void setValue(int value) {
		this.value = value;
	}
	
}

public class EnumDemo {
<span style="white-space:pre">	</span>public static void main(String[] args) {
<span style="white-space:pre">		</span>System.out.println(ColorEnum2.BLUE.getName());
<span style="white-space:pre">		</span>System.out.println(ColorEnum2.BLUE.getValue());
<span style="white-space:pre">	</span>}
}

console:蓝色 2