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 Tools and Libs > Google Guava > Basic > Joiner

Joiner 

Google Guava is a java library with lot of utilities and reusable components. This requires the library guava-10.0.jar to be in classpath. The following example shows using Joiner class. It joins the given strings with provided separator.

File Name  :  
com/bethecoder/tutorials/guava/base_tests/JoinTest.java 
Author  :  Sudhakar KV
Email  :  kvenkatasudhakar@gmail.com
   
package com.bethecoder.tutorials.guava.base_tests;

import com.google.common.base.Joiner;

public class JoinTest {

  /**
   @param args
   */
  public static void main(String[] args) {
    Joiner joiner = Joiner.on(":");
    String str = joiner.join("One""Two""Three""Four")
                //We shouldn't pass null values here
                //To handle nulls we should either use
                //skipNulls() or useForNull(String) methods
                //Throws NullPointerException otherwise
    System.out.println(str);
  }

}
   

It gives the following output,
One:Two:Three:Four


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