How to convert String into double in Java?

There are two ways you can convert a String into double in Java

1. Using Double.parseDouble(String input) - This returns primitive double

String input = "12345.67";
double output = Double.parseDouble(input);
System.out.println(output);

2. Using Double.valueOf(String input) - This returns instance of Double type

String input = "12345.67";
Double output = Double.valueOf(input);
System.out.println(output);

Note: Code will through NumberFormatException if you do not pass a valid double String. Ex. if you pass "foo" that causes NumberFormatException.