id is of primitive type int and not an Object. You cannot call methods on a primitive as you are doing here : Try replacing this: if (id.equals(list[pos].getItemNumber())){ //Getting...
When you convert double to int,the precision of the value is lost. For example, When you convert 4.8657 (double) to int.The int value will be 4.Primitive int does not store decimal numbers.So you will...
How can I prevent java.lang.NumberFormatException: For input string: “N/A”?
Use a DecimalFormatter: double number = 0.9999999999999; DecimalFormat numberFormat = new DecimalFormat("#.00"); System.out.println(numberFormat.format(number)); Will give you “0.99”. You can add or subtract 0 on the right side to get more...
An int is not null, it may be 0 if not initialized. If you want an integer to be able to be null, you need to use Integer instead of int. Integer id; String name; public...
How to check whether a int is not null or empty?
int is a primitive type. Variables of type int store the actual binary value for the integer you want to represent. int.parseInt("1") doesn’t make sense because int is not a class and therefore doesn’t have any methods. Integer is...
Java, Simplified check if int array contains int
JAVA Variable declaration not allowed here
You could use this to sort all kind of Objects sort(T a, Comparator<? super T> c) Arrays.sort(a, Collections.reverseOrder()); Arrays.sort() cannot be used directly to sort primitive arrays in descending order....