Issues related to enum and class inheritance Enum

problem description

I use enum to represent an enumerated class
in addition, I use XXX extends Enum to represent an enumerated class

public final class ApprovalStatusEnum extends Enum {
    private static final long serialVersionUID = -502007467073163619L;

    private String label;

    public static final ApprovalStatusEnum PASS = new ApprovalStatusEnum("PASS", "");

    public static final ApprovalStatusEnum REJECT = new ApprovalStatusEnum("REJECT", "");

    public static final ApprovalStatusEnum WAIT = new ApprovalStatusEnum("WAIT", "");

    public ApprovalStatusEnum(String name, String label) {
        super(name);
        this.label = label;

    }

    public String getLabel() {
        return label;
    }

    public void setLabel(String label) {
        this.label = label;
    }
}

public enum ApprovalStatusEnum1 {

    PASS("PASS", ""),

    REJECT("REJECT", ""),

    WAIT("WAIT", "");

    private String name ;

    private String label;

    ApprovalStatusEnum1(String name, String label) {
        this.name = name;
        this.label = label;
    }

    public String getName() {
        return name;
    }

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

    public String getLabel() {
        return label;
    }

    public void setLabel(String label) {
        this.label = label;
    }
}

enum decompiled and found to inherit Enum, so the two enumerated classes should be the same.

then I wrote this method (the method receives a Class): inherited from Enum

    public static <T extends Enum> T test(Class<T> clazz){
//      xxxxxxxxxxxxx
        return null;
    }

then test it with these two classes

found an error? Why is that? Obviously both classes inherit Enum. It should all be compiled and passed. Ask for advice.

is a little confused, which boss can explain it?

Java

Mar.29,2021

public class TestEnum { public static <T extends Enum> T test(Class<T> clazz){ // xxxxxxxxxxxxx return null; } public static <T extends java.lang.Enum> T testLnag(Class<T> clazz){ // xxxxxxxxxxxxx return null; } public static void main(String[] args) { test(ApprovalStatusEnum.class); testLnag(ApprovalStatusEnum1.class); } }

public enum ApprovalStatusEnum{ ; private static final long serialVersionUID = -502007467073163619L; private String label; private String name; ApprovalStatusEnum(String name, String label) { this.name = name; this.label = label; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getLabel() { return label; } public void setLabel(String label) { this.label = label; } }

public class TestEnum { public static <T extends Enum> T test(Class<T> clazz){ // xxxxxxxxxxxxx return null; } public static <T extends java.lang.Enum> T testLnag(Class<T> clazz){ // xxxxxxxxxxxxx return null; } public static void main(String[] args) { testLnag(ApprovalStatusEnum.class); testLnag(ApprovalStatusEnum1.class); } }