Java String类解析

1. 堆与string pool

String s1=new String("abc");

String s2="abc";

 

2.intern()方法

intern()方法获取string pool中字符串

 

3. StringBuilder用来构造String

String s="Hello";

String s1="Hello"+"World"

String s2=s+"World"

s2=new Stringbuilder(s);

s2.append("World");

 

/*编译器优化*/

final String s="Hello";

......