java.lang.Enum<E>
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static Enum valueOf(Class enumClass, String name)
返回指定名字、给定类的枚举常量。
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String toString()
返回枚举常量名。
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int ordinal()
返回枚举常量在enum声明中的位置，位置从0开始计数。
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int compareTo(E other)
如果枚举常量出现在other之前，则返回一个负值；如果this==other，则返回0；否则返回正值。枚举常量的出现次序在enum声明中给出。
package enums;
import java.util.*;
/**
* This program demonstrates enumerated types
* @author Mr.Ding
*
*/
public class EnumTest {
public static void main(String[] args){
Scanner in = new Scanner(System.in);
System.out.println("Enter a size:(SMALL, MEDIUM, LARGE, EXTRA_LARGE)");
String input = in.next().toUpperCase();
Size size = Enum.valueOf(Size.class, input);
System.out.println("Size=" + size);
System.out.println("abbreviation=" + size.getAbbreviation());
if(size == Size.EXTRA_LARGE){
System.out.println("Good job -- you paid attention to the _.");
}
}
}
enum Size{
SMALL("S"), MEDIUM("M"), LARGE("L"), EXTRA_LARGE("XL");
private Size(String abbreviation) {
this.abbreviation = abbreviation;
}
public String getAbbreviation(){
return this.abbreviation;
}
private String abbreviation;//abbreviation means "short_call(简称)"
}
