Java String contains() Method
Example
Find out if a string contains a sequence of characters:
public class MyClass {
public static void main(String[] args) {
String myStr = "Hello";
System.out.println(myStr.contains("Hel")); // true
System.out.println(myStr.contains("e")); // true
System.out.println(myStr.contains("Hi")); // false
}
}
Definition and Usage
The contains() method checks whether a string contains a sequence of characters.
Returns true if the characters exist and false if not.
Syntax
public boolean contains(CharSequence chars)
Parameter Values
| Parameter | Description |
|---|---|
| CharSequence chars | The characters to be searched for |
The CharSequence interface is a readable sequence of char values, found in the java.lang package.
Technical Details
| Returns: | A boolean, indicating whether a sequence
of characters exist in the specified string:
|
|---|---|
| Throws: | NullPointerException - if the returned value is null |
| Java Version: | 1.5 |
❮ String Methods
