❮ String Methods
Example
String myStr = "Hello";
System.out.println(myStr.contains("Hel")); // true
System.out.println(myStr.contains("e")); // true
System.out.println(myStr.contains("Hi")); // falseDefinition 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: true - sequence of characters exists false - sequence of characters do not exist |
|---|---|
| Throws: | NullPointerException - if the returned value is null |
| Java Version: | 1.5 |
- true - sequence of characters exists
- false - sequence of characters do not exist