枚举类实现单例，序列化攻击测试、反射攻击测试、反编译分析

jad/EnumInstance.jad

@@ -0,0 +1,53 @@
+// Decompiled by Jad v1.5.8g. Copyright 2001 Pavel Kouznetsov.
+// Jad home page: http://www.kpdus.com/jad.html
+// Decompiler options: packimports(3) 
+// Source File Name:   EnumInstance.java
+
+package top.fjy8018.designpattern.pattern.creational.singleton;
+
+
+public final class EnumInstance extends Enum
+{
+
+    public static EnumInstance[] values()
+    {
+        return (EnumInstance[])$VALUES.clone();
+    }
+
+    public static EnumInstance valueOf(String name)
+    {
+        return (EnumInstance)Enum.valueOf(top/fjy8018/designpattern/pattern/creational/singleton/EnumInstance, name);
+    }
+
+    private EnumInstance(String s, int i)
+    {
+        super(s, i);
+    }
+
+    public Object getData()
+    {
+        return data;
+    }
+
+    public void setData(Object data)
+    {
+        this.data = data;
+    }
+
+    public Object getInstance()
+    {
+        return INSTANCE;
+    }
+
+    public static final EnumInstance INSTANCE;
+    private Object data;
+    private static final EnumInstance $VALUES[];
+
+    static 
+    {
+        INSTANCE = new EnumInstance("INSTANCE", 0);
+        $VALUES = (new EnumInstance[] {
+            INSTANCE
+        });
+    }
+}