java.lang.Double.valueOf(String s)

package com.codingdict;



import java.lang.*;



public class DoubleDemo {



   public static void main(String[] args) {



      Double d = new Double("6.5");

      String str = "55";



      /* returns a Double object holding the value represented 

         by str */

      System.out.println("Value = " +  d.valueOf(str));

   }

}