使用Enum值作为字符串字面量

什么是最好的方法来使用存储在Enum字符串字面量的值? 例如:

public enum Modes {
    some-really-long-string,
    mode1,
    mode2,
    mode3
}

然后我就可以用《风尚》了。将其字符串表示形式返回为Mode1。而不必一直调用Mode.mode1.toString()。

当前回答

package com.common.test;

public  enum Days {


    monday(1,"Monday"),tuesday(2,"Tuesday"),wednesday(3,"Wednesday"),
    thrusday(4,"Thrusday"),friday(5,"Friday"),saturday(6,"Saturday"),sunday(7,"Sunday");

    private int id;
    private String desc;


    Days(int id,String desc){
        this.id=id;
        this.desc=desc;
    }

    public static String getDay(int id){

        for (Days day : Days.values()) {
            if (day.getId() == id) {
                return day.getDesc();
            }
        }
        return null;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }



};

2016-01-28 09:47:53

其他回答

据我所知，唯一的办法就是

Mode.mode1.name();

然而，如果你真的需要这样做，你可以这样做:

public enum Modes {
    mode1 ("Mode1"),
    mode2 ("Mode2"),
    mode3 ("Mode3");

    private String name;       

    private Modes(String s) {
        name = s;
    }
}

2011-07-12 16:02:22

正如Benny Neugebauer提到的，您可以覆盖toString()。然而，取而代之的是为每个枚举字段重写toString，我更喜欢这样:

public enum Country{
    SPAIN("España"),
    ITALY("Italia"),
    PORTUGAL("Portugal");


    private String value;

    Country(final String value) {
        this.value = value;
    }

    public String getValue() {
        return value;
    }

    @Override
    public String toString() {
        return this.getValue();
    }
}

您还可以添加一个静态方法来检索所有字段，打印所有字段，等等。只需调用getValue来获取与每个Enum项关联的字符串

2014-10-01 23:15:41

对于我的枚举，我真的不喜欢把它们分配给每个1个字符串。这就是我如何在枚举上实现toString()方法。

enum Animal
{
    DOG, CAT, BIRD;
    public String toString(){
        switch (this) {
            case DOG: return "Dog";
            case CAT: return "Cat";
            case BIRD: return "Bird";
        }
        return null;
    }
}

2016-12-28 04:34:49

package com.common.test;

public  enum Days {


    monday(1,"Monday"),tuesday(2,"Tuesday"),wednesday(3,"Wednesday"),
    thrusday(4,"Thrusday"),friday(5,"Friday"),saturday(6,"Saturday"),sunday(7,"Sunday");

    private int id;
    private String desc;


    Days(int id,String desc){
        this.id=id;
        this.desc=desc;
    }

    public static String getDay(int id){

        for (Days day : Days.values()) {
            if (day.getId() == id) {
                return day.getDesc();
            }
        }
        return null;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }



};

2016-01-28 09:47:53

你可以简单地使用:

""+ Modes.mode1

2015-06-04 03:47:41

使用Enum值作为字符串字面量

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