Substring in Java

A part of string is called substring. In other words, substring is a subset of another string. In case of substring startIndex is inclusive and endIndex is exclusive.

Note: Index starts from 0.

You can get substring from the given string object by one of the two methods:

1. public String substring(int startIndex): This method returns new String object containing the substring of the given string from specified startIndex (inclusive).
2. public String substring(int startIndex, int endIndex): This method returns new String object containing the substring of the given string from specified startIndex to endIndex.

In case of string:

• startIndex: inclusive
• endIndex: exclusive

Let's understand the startIndex and endIndex by the code given below.

1. String s="hello";  
2. System.out.println(s.substring(0,2));//he  

In the above substring, 0 points to h but 2 points to e (because end index is exclusive).

Example of java substring

1. public class TestSubstring{  
2.  public static void main(String args[]){  
3.    String s="Sachin Tendulkar";  
4.    System.out.println(s.substring(6));//Tendulkar  
5.    System.out.println(s.substring(0,6));//Sachin  
6.  }  
7. }  

Tendulkar
Sachin