StringBuffer和StringBuilder
认真的张 2015-08-16 10:06:47 大神求教
StringBuilder sd=new StringBuilder("123"+"45");
StringBuilder sp=new StringBuilder("12345");
System.out.println(so.equals(po));为什么是false
StringBuffer so=new StringBuffer("123"+"45");
StringBuffer po=new StringBuffer("12345");
System.out.println(sd.equals(sp));为什么也是false