Summary of usage of string function substring in Java

This article is mainly about the use of string function substring in Java is introduced in detail, the need for friends can come to the reference, I hope to help you

String str; str=str.substring (int beginindex), intercept str from the initial letter length of Beginindex string, the remaining string is assigned to STR;

str=str.substring (int beginindex,int endIndex), intercepts the string from Beginindex to EndIndex at the end of STR and assigns it to STR;

Demo

Copy CodeThe code is as follows: Class Test {public static void main (string[] args) {String S1 = "1234567890ABCDEFGH";   S1 = s1.substring (10);  System.out.println (S1); } }

Running Result: ABCDEFGH

Copy CodeThe code is as follows: Class Test {public static void main (string[] args) {String S1 = "1234567890ABCDEFGH";   S1 = s1.substring (0,9);  System.out.println (S1); } }

Run Result: 123456789

Here is a typical example:

Copy CodeThe code is as follows: public class stringdemo{

public static void Main (string agrs[]) {
   string str= ' This is my original string ';
   String todelete= "original";
   if (Str.startswith (todelete))     str=str.substring (Todelete.length ());     Else     if (Str.endswith (todelete))      str=str.substring (0, Str.length () -todelete.length ());     else     {     int index=str.indexof (todelete);       if (index!=-1)      {      String str1=str.substring (0, index);       String str2=str.substring (Index+todelete.length ());       str=str1+str2;     }      Else       System.out.println ("string/ "+todelete+"/"Not Found");    }    System.out.println (str); } }

Run Result: This is my string

Summary of usage of string function substring in Java