Understand the "pass by value" in Java

Pass by value in Java

// http://www.programcreek.com/2013/09/string-is-passed-by-reference-in-java/

public static void test (){
	ArrayList<StringBuilder> ret = new ArrayList<StringBuilder>();
	StringBuilder sb = new StringBuilder("abc");
	ret.add(sb);
	sb.append("d"); // sb = new StringBuilder("cba")
	System.out.println(ret.toString());
	
	ArrayList<String> lst = new ArrayList<String>();
	String str = "abc";
	lst.add(str);
	str += "d"; // str = "cba"
	System.out.println(lst.toString());
}