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# Java Examples - Removing White Spaces

## Problem Description:

How to remove the white spaces?

## Solution:

Following example demonstrates how to remove the white spaces with the help matcher.replaceAll(stringname) method of Util.regex.Pattern class.

    import java.util.regex.Matcher;
    import java.util.regex.Pattern;

    public class Main {
       public static void main(String[] argv)
       throws Exception {
          String ExString = "This is a Java program.
          This is another Java Program.";
          String result=removeDuplicateWhitespace(ExString);
          System.out.println(result);
       }
       public static CharSequence
       removeDuplicateWhitespace(CharSequence inputStr) {
          String patternStr = "\\s+";
          String replaceStr = " ";
          Pattern pattern = Pattern.compile(patternStr);
          Matcher matcher = pattern.matcher(inputStr);
          return matcher.replaceAll(replaceStr);
       }
    }

## Result:

The above code sample will produce the following result.

    ThisisaJavaprogram.ThisisanotherJavaprogram.