java中int转String

public class IntToString { public static void main(String[] args) { //第一种方式 //String.valueOf(i) int i = 250; String str = String.valueOf(i); //验证 System.out.println(getType(i)); System.out.println(getType(str)); //第二种方式 // Integer.toString(i) String str2 = Integer.toString(i); System.out.println(getType(str2)); //第三种方式 // i+"" String str3 = i + ""; System.out.println(getType(str3)); } public static String getType(Object o){ return o.getClass().toString(); } }