Im trying to work with a form that creates a precise decimal from two JTextareas into a 3rd JTextarea.
Eg
Produced Goods ——– 32746534
Spoiled Goods ——– 4756
Spoiled Percentage —— xx.xxxxxxxx%
It needs to be exact and work with 11 digit produced goods and 10 decimal point percentages.
.
BigDecimal d1 = new BigDecimal(Integer.parseInt(linerInfeedTextField.getText()));
BigDecimal d2 = new BigDecimal(Integer.parseInt(shellsSPoiledTextField.getText()));
BigDecimal d3 = d1.multiply(d2); // d1 + d2 is invalid
BigDecimal d4 = d3.divide(new BigDecimal(100));
percentSpoiledTextField.setText(d4+"%");
Answer
Use DecimalFormat..
Example:
DecimalFormat df = new DecimalFormat("###.####") // <- "###.###" specifies precision
double x = 143.13;
double y = 23.12;
double answer = x / y;
System.out.println("Answer: " + df.format(answer));