第1个回答 2014-04-14
String temp=null;
temp = s1;
s1=s2;
s2=temp;
第2个回答 2014-04-14
String sTemp = s1;
s1 = s2;
s2 = sTemp;
第3个回答 推荐于2016-07-12
String s1="uSSSCCsdfgsdAX@$#67";
String s2="sssdCCsdfGSDAX@$#67";
String s3="";
s3=s1;
s1=s2;
s2=s3;本回答被提问者采纳
第4个回答 推荐于2018-05-14
定义第三个字符串变量:
String s1="uSSSCCsdfgsdAX@$#67";
String s2="sssdCCsdfGSDAX@$#67";
String s3="";
s3=s1;
s1=s2;
s2=s3;
使用StringBuffer:
String s1 = "uSSSCCsdfgsdAX@$#67";
String s2 = "sssdCCsdfGSDAX@$#67";
StringBuffer buffer = new StringBuffer();
buffer.append(s1).append(s2);
s1 = buffer.toString().substring(s1.length());
s2 = buffer.toString().substring(0,s1.length());本回答被网友采纳