inputing number in java
import java.util.*;
class InputNum {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
System.out.print("Enter a number: "); // will ask the user to input number
int enter = sc.nextInt(); // stores the number input
// print the value by calling enter variable
System.out.println(enter);
}
}Java Number Field
NumberFormat longFormat = NumberFormat.getIntegerInstance();
NumberFormatter numberFormatter = new NumberFormatter(longFormat);
numberFormatter.setValueClass(Long.class); //optional, ensures you will always get a long value
numberFormatter.setAllowsInvalid(false); //this is the key!!
numberFormatter.setMinimum(0l); //Optional
JFormattedTextField field = new JFormattedTextField(numberFormatter);Copyright © 2021 Codeinu
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