Simple use of enum

1. When the enumeration value is the enumeration itself

example ：

public enum TestEnum {
    
	ONE,TWO,THREE;
}

call ：

TestEnum.ONE

Console printing

2. When the enumeration value is a user-defined value

public enum TestEnum {
    
    ONE(1),TWO(2),THREE(3);

    private Integer numb;
    //  Constructors 
    TestEnum(int numb) {
    
        this.numb = numb;
    }
     //  Export value 
    public Integer getNumb() {
    
        return numb;
    }
}

call ：

TestEnum.ONE.getNumb()

Console printing

3. There are multiple enumeration values of enumeration

example ：

package com.api.system.enums;

/** * @author king */
public enum WsEnum {
    
    SADJ("SADJ"," Enumeration number one "),
    LAJD("LAJD"," Enumeration number two "),
    KYBG("KYBG"," Enumeration number three "),
    KYQD("KYQD"," Enumeration number four "),
    SJBG("SJBG", " Enumeration number five "),
    SJQD("SJQD"," Enumeration number six "),
    SJGK("SJGK"," Enumeration number seven "),
    FHQD("FHQD", " Enumeration number eight "),
    ZJBQ("ZJBQ"," Enumeration number nine "),
    BQQD("BQQD"," Enumeration number ten ");
    private String id;
    private String name;

    WsEnum(String id, String name) {
    
    }

    public String getId() {
    
        return id;
    }

    public String getName() {
    
        return name;
    }
	// By enumeration id Query the current enumeration , You can use for Cyclic replacement 
    public static WsEnum getEnum(String id) {
    
        Optional<WsEnum> wsEnum = Arrays.stream(WsEnum.values()).filter(x -> x.getId().equals(id)).findFirst();
        return wsEnum.get();
    }
    //  By enumeration name Query the current enumeration , You can use for Cyclic replacement 
    public static WsEnum getEnumByName(String name) {
    
        Optional<WsEnum> wsEnum = Arrays.stream(WsEnum.values()).filter(x -> x.getName().equals(name)).findFirst();
        return wsEnum.get();
    }
}