transformer un string en double java

1String s = "10.1";
2Double d = Double.parseDouble(s);

1double d = Double.parseDouble(aString);

1String text = "12.34"; // example String
2double value = Double.parseDouble(text);

1String number = "123,321";
2double value = Double.parseDouble( number.replace(",",".") );

1String doubleAsString = "23.23";
2BigDecimal price = new BigDecimal(doubleAsString);
3BigDecimal total = price.plus(anotherPrice);

1double total = Double.parseDouble(jlbTotal.getText());
2double price = Double.parseDouble(jlbPrice.getText());