substring() method in Java
The substring() method is used to extract some portion from the actual String and the actual string remains the same. This method returns a new string. We can say this a subset of a String. There are two variants in subString() method:
- substring (int start Index): It returns the subset of the String (a new string), and it starts from the given start index to the end of the string.
- substring(int start index, int end Index): It starts from the given start index and stops at the end index, this means both start index and end Index are part of the substring that is extracted.
Syntax of substring() Method:
String.substring(int index)
String.substring(int start index, int end Index)
Example of substring() method in Java
Java
// Java program to demonstrate // substring() method of String class import java.io.*; public class SubString { public static void main(String args[]) { String s = "Deep Pawan"; //String System.out.println(s.substring(5)); System.out.println(s.substring(0,4)); System.out.println(s.substring(2,4)); } } |
Output
Pawan Deep ep
Explanation of the above Program:
- In a String, we have performed the implementation of substring() method.
s.substring(5)prints a substring starts from index 5 to the end of the string.s.substring(0,4)prints a substring starts from index 0 to index 4.s.substring(2,4)prints a substring starts from index 2 to index 4.
Difference Between charAt() and substring() Method in Java
In Java, the charAt() method of the String class is used to extract the character from a string. It returns the character at the specified index in the String. The substring() method is used to extract some portion from the actual String and the actual string remains the same as it is. After that, the method returns a new string.
In this article, we will learn charAt() vs substring() methods in Java.
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