Extract a Substring Between Two Characters in a String in Java

In Java, the extraction of the substring between the two characters in a string can be implemented with the substring method, and string is a pre-defined method in the class of the String. A String is a pre-defined class of the java.lang package.

substring(startIndex, endIndex): This is a pre-defined method of the String class, and it takes the two parameters are starting index and ending index of the string can extract the substring.

Step-by-step Implementation

• Create the main method in the Java program.
• Define the one static with a string value.
• Take the startChar and endChar as characters after that find the index of the characters with the indexOf() method.
• Give the startIndex and endIndex, the parameters of the substring method then it finds the substring of the specific between of two characters.
• Print the substring.

Program to Extract a Specific Substring between Two Characters in a String in Java

Java

// Java program to extract a specific substring between two characters in a String
import java.lang.String;
public class GFGSubStringExample {
   //main method
    public static void main(String[] args) {
        String inputString = "Welcome to the Geeks for Geeks Tutorial";

        // specify the start and end characters
        char startChar = 'h';
        char endChar = 't';

        // to find the index of the start character
        int startIndex = inputString.indexOf(startChar);

        // to find the the index of the end character after the start character
        int endIndex = inputString.indexOf(endChar, startIndex + 1);

        // check if both start and end characters are found
        if (startIndex != -1 && endIndex != -1) {
            // extract the substring between the start and end characters
            String result = inputString.substring(startIndex + 1, endIndex);

            // print the result
            System.out.println("Substring between '" + startChar + "' and '" + endChar + "': " + result);
        } else {
            System.out.println("Not found");
        }
    }
}

Output

Substring between 'h' and 't': e Geeks for Geeks Tu

Explanation of the Program:

• The above the program is the example of the extract the specific substring between two characters in a string.
• It is easy to implement in the Java program to obtain the starting and ending characters.
• And it has the index values using the substring method to extract the substring between the characters.