HashMap 을 복사하는 방법

public void CloneTestMap() {
	// testMap
	HashMap<String, Object> testMap = new HashMap<String, Object>();
	testMap.put("name", "mynameSt");
	testMap.put("hp", "01012345678");
	testMap.put("age", "23");
	testMap.put("height", "179");
	System.out.println("testMap: "+ testMap.toString());
	System.out.println("===========");
	// putAll을 이용
	HashMap<String, Object> putAllMap = new HashMap<String, Object>();
	putAllMap.putAll(testMap);
	System.out.println("putAllMap: "+ putAllMap.toString());
	// entrySet을 이용
	HashMap<String, Object> entryMap = new HashMap<String, Object>();
	for (HashMap.Entry<String, Object> entry : testMap.entrySet()) {
		entryMap.put(entry.getKey(), entry.getValue());
	}
	System.out.println("entryMap: "+ entryMap.toString());
	// testMap 조작
	testMap.remove("age");
	System.out.println("===========");
	System.out.println("testMap: "+ testMap.toString());
	System.out.println("putAllMap: "+ putAllMap.toString());
	System.out.println("entryMap: "+ entryMap.toString());	
}

출력

testMap: {name=mynameSt, hp=01012345678, age=23, height=179}
===========
putAllMap: {name=mynameSt, hp=01012345678, age=23, height=179}
entryMap: {name=mynameSt, hp=01012345678, age=23, height=179}
===========
testMap: {name=mynameSt, hp=01012345678, height=179}
putAllMap: {name=mynameSt, hp=01012345678, age=23, height=179}
entryMap: {name=mynameSt, hp=01012345678, age=23, height=179}