Regular expression for comma separated numbers

Regular expression for string

1. For double value with % symbol

package com.javanotes2all.java.string;

public class RegulerExpresion {

 public static void main(String[] args) 
 {
  String s="10.0%";
  if(s.trim().matches(".?[0-9]+(.[0-9]+)*\\%?"))
  {
   System.out.println("valid string");
  }else
   System.out.println("invalid string");
 }
}

   

For comma separated number

package com.javanotes2all.java.string;

public class RegulerExpresion {

 public static void main(String[] args) 
 {
  String s="1234123,123213213,123123,123123,123123,123123";
  if(s.trim().matches("[0-9]+(,[0-9]+)*"))
  {
   System.out.println("valid string");
  }else
   System.out.println("invalid string");
 }
}

note:
1.Expression [0-9]+(,[0-9]+)*  is not applicable for 1212,343434,343434,343434,3434,

Some more combinations:

No postfix/prefix commas: [0-9]+(,[0-9]+)*

No prefix (optional postfix): [0-9]+(,[0-9]+)*,?

No postfix (optional prefix): ,?[0-9]+(,[0-9])*

Optional postfix and prefix: ,?[0-9]+(,[0-9]+)*,?