Java Design Pattern
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Java Regular Expression Mobile No Validation

Write a java program to check whether a given number is a valid mobile number or not

import java.util.regex.*;
class RegexDemo6
	public static void main(String[] args)
		Pattern p=Pattern.compile("(0/91)?[7-9][0-9]{9}");
		Matcher m=p.matcher(args[0]);
		if(m.find() &&[0]))
			System.out.println("valid mobile number");
			System.out.println("invalid number");


1st run : java RegexDemo6 9439202111
valid mobile number
2nd run : java RegexDemo6 929292929292
invalid number

Java Regular expression program to check whether a given mail id is valid or invalid mail id.

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