How to trim spaces in the given string in java?

Below example shows how to trim spaces in the given string. The trim() function removes all kind of space characters at both ends, means removes starting and trailing spaces. These space characters includes normal space, enter, new line, tab, etc.

package com.myjava.string;

public class MyStringTrim {
    public static void main(String a[]){
        String str = "  Junk   ";
        System.out.println(str.trim());
    }
}