标签:code 字符 system class put ring str java bsp
System.out.println("" +x); //以空字符开头的 后面所有的内容都会以空字符输出
String ch = "I love"; ch += "you"; output:I love you //+=操作符串联了两个字符串
标签:code 字符 system class put ring str java bsp
原文地址:https://www.cnblogs.com/jiangfeilong/p/9971765.html