抽象自定义Map
首先先来个抽象类,用来注入一个Map的真正实现来代理Map接口方法。同时能让继承它的类更简洁(其子类不用实现Map接口方法)。
package com.kovizone.util;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
/**
* 抽象自定义Map
*
* @author KV
* @since 2022/12/08
*/
public abstract class AbstractCustomMap implements Map {
/**
* 静态代理对象
*
* 真正实现接口的对象
*/
private final Map map;
protected AbstractCustomMap() {
this.map = new HashMap();
}
protected AbstractCustomMap(Map map) {
this.map = map == null ? new HashMap() : map;
}
@Override
public int size() {
return map.size();
}
@Override
public boolean isEmpty() {
return map.isEmpty();
}
@Override
public boolean containsKey(Object key) {
return map.containsKey(key);
}
@Override
public boolean containsValue(Object value) {
return map.containsValue(value);
}
@Override
public V get(Object key) {
return map.get(key);
}
@Override
public V put(K key, V value) {
return map.put(key, value);
}
@Override
public V remove(Object key) {
return map.remove(key);
}
@Override
public void putAll(Map |