String str = new StringBuilder("lisi").toString();
System.out.println(str == str.intern());
String str2 = new StringBuilder("zhang").append("san").toString();
System.out.println(str2 == str2.intern());
为什么会一个false 一个true
String str = new StringBuilder("lisi").toString();
System.out.println(str == str.intern());
String str2 = new StringBuilder("zhang").append("san").toString();
System.out.println(str2 == str2.intern());
为什么会一个false 一个true