public class SubString {
public static void main(String[] args) {
String str="[email protected]";
String str1=str.substring(0, str.indexOf("@"));//截取@之前的字符串
System.out.println(str1);//1419459573
String str2=str.substring(10);
System.out.println(str2);//@qq.com
String str3=str1.concat(str2);
System.out.println(str3);//[email protected]
}
}
运行截图:
