valueof这个万能方法，将string转换为int或者int转换为string都可以

private static String testString = "111";

int stringInt = Integer.valueOf(testString);
String intToString = String.valueOf(stringInt);
System.out.println(intToString);

转载于:https://www.cnblogs.com/panxuejun/p/6368733.html