Java String trim() method

Java String trim() method returns String after eliminating leading and trailing spaces.

Note:- Java String trim() method doesn't trim or omit middle spaces.

Syntax:

public String trim()

Returns:

It returns string with omitted leading and trailing spaces.

Java String trim() method example 1

public class JavaStringTrimEx1
{
       public static void main(String[] args) {
              // String declaration with trailing and leading space
              String inputValue = "java String trim() method example by tutorialandexample.com";                                             
              // removing the white spaces
              String trimValue = inputValue.trim();
              System.out.println(trimValue);
       }
}

Output:

java String trim() method example by tutorialandexample.com

Java String trim() method example 2

public class JavaStringTrimEx2
{
       public static void main(String[] args) {
              // String declaration with trailing and leading space
              String inputValue = "tutorialandexample.com";                                            
              System.out.println("without trim:" +inputValue);
              // removing the white spaces
              String trimValue = inputValue.trim();
              System.out.println("After trim  :" +trimValue);
       }
}

Output:

without trim: tutorialandexample.com                                             
After trim  :tutorialandexample.com

Java String trim() method example 3

public class JavaStringTrimEx3
{
      public static void main(String[] args)
      {     
      // trims the trailing and leading spaces
    String s = "    This tutorial is written by Roy NK    ";
    System.out.println(s.trim());     
    // trims the leading spaces
    s = "  Tutorial And Example  ";
    System.out.println(s.trim());          
    }
}

Output:

This tutorial is written by Roy NK
Tutorial And Example

Java String trim() method example 4

public class JavaStringTrimEx4 { 
    public static void main(String[] args) { 
        String s1 ="   java string   "; 
        System.out.println(s1.length()); 
        System.out.println(s1); //Without trim() 
        String tr = s1.trim(); 
        System.out.println(tr.length()); 
        System.out.println(tr); //With trim() 
    } 
}

Output:

17
java string  
11
java string