Convert String to double in Java

java string casting double type-conversion

You can use Double.parseDouble() to convert a String to a double:

String text = "12.34"; // example Stringdouble value = Double.parseDouble(text);

For your case it looks like you want:

double total = Double.parseDouble(jlbTotal.getText());double price = Double.parseDouble(jlbPrice.getText());

java string casting double type-conversion

If you have problems in parsing string to decimal values, you need to replace "," in the number to "."

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

java string casting double type-conversion

To convert a string back into a double, try the following

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

The parseDouble method will achieve the desired effect, and so will the Double.valueOf() method.

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