Java String contains Example

String class Contains method example

String class Contains method example:- This example demonstrates the working of contains() method. this method generates boolean value true if and only if it finds the same sequence of data in the called String.

Syntax:-contains(CharSequence s)

Here is the code:-

/**
* @(#) ContainsString.java
* ContainsString class demonstrates the working of contains() method of String class of lang package
* @version 14-May-2008
* @author Rose India Team
*/


public class ContainsString {
public static void main(String args[]) {

  // contains() method checks the sequence characters and
  // number or both characters and numbers together passed in parentheses
  // into the called String
  String str = "om namah shivaya", str1 = "420_9211", str2, str3;

  CharSequence char0 = "am", char1 = "_";
  boolean result = str.contains(char0);

  // Method ables to find the sequence of characters(am) therefore it
  // generates boolean type true
  System.out.println("Method returns true here:  " + "'" + result + "'");
  result = str1.contains(char1);
  System.out.println();
  // Method ables to fing the symbol underscore(_) therefore it generates
  // boolean type true"
  System.out.println("'true' is returned:    " + "'" + result + "'");

  System.out.println();
  str2 = " hare ram1 hare ram, hare krishna hare ram ";
  System.out.println("'false' is returned:    " + "'"
      + str2.contains("krishna ram1") + "'");

}

}

Output of the program:-

Method returns true here: 'true' 'true' is returned: 'true' 'false' is returned: 'false'