How to Check if a String contains Another String in Java?

Java – Check if a String contains Another String

To check if a String str1 contains another string str2 in Java, use String.contains() method. Call contains() method on the string str1 and pass the other string str2 as argument. If str1 contains the string str2, then contains() method returns true.

Java Program

public class Example {
	public static void main(String[] args) {
		String str1 = "apple";
		String str2 = "pp";
		boolean result = str1.contains(str2);
		System.out.println("Does str1 contains str2? " + result);
	}
}

Output

Does str1 contains str2? true

If str1 does not contain the string str2, then contains() method returns false.

Java Program

public class Example {
	public static void main(String[] args) {
		String str1 = "apple";
		String str2 = "kk";
		boolean result = str1.contains(str2);
		System.out.println("Does str1 contains str2? " + result);
	}
}

Output

Does str1 contains str2? false

Conclusion

In this Java Tutorial, we learned how to check if a string contains another string in Java.