Java String substring() Method

This is one of the articles from our Java Tutorial for Beginners.

The Java String substring() Method

Syntax:

public String substring(int beginIndex)
 
or
 
public String substring(int beginIndex, int endIndex)

public String substring(int beginIndex)

public String substring(int beginIndex, int endIndex)

When you set int beginIndex (for example: beginIndex number 3), the program copies all the information from that index number (in our case: 3) until and including the end.

When you set both int beginIndex and int endIndex (for example: beginIndex number 3 and endIndex 7), the program copies all the information from the beginning index number (in our case: 3) until, but not including the end index number (in our case: 7). In other words, the endIndex number is not included.

Keep in mind that index numbers start from zero. It will make more sense in practice.

Example

class Test {
 
	public static void main(String[] args) {
		String sentence ="I love Java";
		System.out.println(sentence.substring(2));
		System.out.println(sentence.substring(2,6));
	}
}

class Test {

public static void main(String[] args) {

String sentence ="I love Java";

System.out.println(sentence.substring(2));

System.out.println(sentence.substring(2,6));

}

If you run this code on your computer, you will see the following in the console:

love Java

love

You can find more articles in our Java Tutorial for Beginners.