Java String contains() Method Tutorial

In this section we will learn what the String contains() method is and how to use it in Java.

What is Java String contains() Method?

When we want to check a string value to see if it contains a specific sequence of characters in it, we can use the contains() method.

Java contains() Method Syntax:

public boolean contains(CharSequence chars)

contains() Method Parameters:

The `contains()` method takes a string as its argument and checks the target string to see if it contains the character sequence that we set as the argument of the method.

Note: The `CharSequence` is an interface and the `String` class implemented it. So we can use String objects as the argument to this method.

contains() Method Return Value:

The return value of this method is of type boolean:

The method returns true of the target string contained the character sequence and false otherwise.

Example: using String contains() method

public class Simple {

    public static void main(String[] args) {
        String s = "Life is good";
        System.out.println(s.contains("is not good"));
        System.out.println(s.contains("is good"));






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