java string to double

public class stringtodouble {
	public static void main(String args) {
    	String string = "1.23";
      	double decimal = Double.parseDouble(string);
    }
}

try {
  a = Double.parseDouble(b);
} catch (NumberFormatException e) {
  //the parseDouble failed and you need to handle it here
}

Double d = Double.valueOf(String str);

Double myDouble = Double.parseDouble("23.5");

String s = "10.1";
Double d = Double.parseDouble(s);

String number = "123,321";
double value = Double.parseDouble( number.replace(",",".") );