Discussion on the speed of int2string

Speed
Import java.util.*;import java.io.*;import java.sql.*;import java.text.*;import java.util.regex.*;p ublic class Test{  public static void Main (string[] args) throws exception{long starttime = System.currenttimemillis ();  String s = ""; Boolean flag = true; Changes in the environment

In a constant setting, the fastest for (int i = 0;i < 999999;i++) {if (flag) {s = i + "") is used in the following ways;   }else{s = 9 + ""; } System.out.println (System.currenttimemillis ()-starttime);

In a changing environment, use the following methods to speed the fastest starttime = System.currenttimemillis ();   for (int i = 0;i < 999999;i++) {if (flag) {s = integer.tostring (i);   }else{s = integer.tostring (9);    } System.out.println (System.currenttimemillis ()-starttime);  This method seems to be superfluous starttime = System.currenttimemillis ();   for (int i = 0;i < 999999;i++) {if (flag) {s = string.valueof (i);   }else{s = string.valueof (9); } System.out.println (System.currenttimemillis ()-starttime);

In any case, both speed and efficiency are the worst StartTime = System.currenttimemillis ();   for (int i = 0;i < 999999;i++) {if (flag) {s = new Integer (i). toString ();   }else{s = new Integer (9). ToString (); } System.out.println (System.currenttimemillis ()-starttime); }};