package org.jfree.chart.ui;

import java.io.ObjectStreamException;
import java.io.Serializable;

/**
 * Used to indicate either the foreground or background layer.
 */
public final class Layer implements Serializable {

    /** For serialization. */
    private static final long serialVersionUID = -1470104570733183430L;
    
    /** Foreground. */
    public static final Layer FOREGROUND = new Layer("Layer.FOREGROUND");

    /** Background. */
    public static final Layer BACKGROUND = new Layer("Layer.BACKGROUND");

    /** The name. */
    private String name;

    /**
     * Private constructor.
     *
     * @param name  the name.
     */
    private Layer(final String name) {
        this.name = name;
    }

    /**
     * Returns a string representing the object.
     *
     * @return The string.
     */
    public String toString() {
        return this.name;
    }

    /**
     * Returns <code>true</code> if this object is equal to the specified 
     * object, and <code>false</code> otherwise.
     *
     * @param o  the other object.
     *
     * @return A boolean.
     */
    public boolean equals(final Object o) {

        if (this == o) {
            return true;
        }
        if (!(o instanceof Layer)) {
            return false;
        }

        final Layer layer = (Layer) o;
        if (!this.name.equals(layer.name)) {
            return false;
        }

        return true;

    }

    /**
     * Returns a hash code value for the object.
     *
     * @return the hashcode
     */
    public int hashCode() {
        return this.name.hashCode();
    }

    /**
     * Ensures that serialization returns the unique instances.
     * 
     * @return The object.
     * 
     * @throws ObjectStreamException if there is a problem.
     */
    private Object readResolve() throws ObjectStreamException {
        Layer result = null;
        if (this.equals(Layer.FOREGROUND)) {
            result = Layer.FOREGROUND;
        }
        else if (this.equals(Layer.BACKGROUND)) {
            result = Layer.BACKGROUND;
        }
        return result;
    }
    
}



@@ -1,8 +1,1237 @@
+/* ===========================================================%0A * JFreeChart : a free chart library for the Java(tm) platform%0A * ===========================================================%0A *%0A * (C) Copyright 2000-2017, by Object Refinery Limited and Contributors.%0A *%0A * Project Info:  http://www.jfree.org/jfreechart/index.html%0A *%0A * This library is free software; you can redistribute it and/or modify it%0A * under the terms of the GNU Lesser General Public License as published by%0A * the Free Software Foundation; either version 2.1 of the License, or%0A * (at your option) any later version.%0A *%0A * This library is distributed in the hope that it will be useful, but%0A * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY%0A * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public%0A * License for more details.%0A *%0A * You should have received a copy of the GNU Lesser General Public%0A * License along with this library; if not, write to the Free Software%0A * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,%0A * USA.%0A *%0A * %5BOracle and Java are registered trademarks of Oracle and/or its affiliates. %0A * Other names may be trademarks of their respective owners.%5D%0A *%0A */%0A%0A
 package 
@@ -1891,22 +1891,16 @@
 e Layer(
-final 
 String n
@@ -2030,32 +2030,46 @@
 string.%0A     */%0A
+    @Override%0A
     public Strin
@@ -2143,25 +2143,20 @@
 rns 
-%3C
+%7B@
 code
-%3E
+ 
 true
-%3C/code%3E
+%7D
  if 
@@ -2217,26 +2217,21 @@
 and 
-%3C
+%7B@
 code
-%3E
+ 
 false
-%3C/code%3E
+%7D
  oth
@@ -2347,22 +2347,16 @@
  equals(
-final 
 Object o
@@ -2502,22 +2502,16 @@
         
-final 
 Layer la
@@ -2730,24 +2730,24 @@
 ashcode%0A
-
      */%0A
     publ
@@ -2730,32 +2730,46 @@
 ashcode%0A     */%0A
+    @Override%0A
     public int h

Remove final keywords.