有个问题不理解,希望大家看看.

Question

String s1 = new StringBuilder("go").append("od").toString();
System.out.println("s1:"+s1);
System.out.println("s1.intern():"+s1.intern());
System.out.println(s1.intern() == s1); //true
String s2 = new StringBuilder("ja").append("va").toString();
System.out.println("s2:"+s2);
System.out.println("s2.intern():"+s2.intern());
System.out.println(s2.intern() == s2); //false

运行结果是这样的:
s1:good
s1.intern():good
true
s2:java
s2.intern():java
false

Answer 1

请看这篇文章http://blog.csdn.net/l243225530/article/details/49736611