Example usage for javafx.beans.binding NumberBinding isValid

Introduction

In this page you can find the example usage for javafx.beans.binding NumberBinding isValid.

Prototype

boolean isValid();

Source Link

Document

Checks if a binding is valid.

Usage

From source file:Main.java

public static void main(String[] args) {

    IntegerProperty x = new SimpleIntegerProperty(100);
    IntegerProperty y = new SimpleIntegerProperty(200);

    // Create a binding: sum = x + y
    NumberBinding sum = x.add(y);

    System.out.println("After creating sum");
    System.out.println("sum.isValid(): " + sum.isValid());

    // Let us get the value of sum, so it computes its value and
    // becomes valid
    int value = sum.intValue();

    System.out.println();//ww w .  jav a  2s.co m
    System.out.println("After requesting value");
    System.out.println("sum.isValid(): " + sum.isValid());
    System.out.println("sum = " + value);

    // Change the value of x
    x.set(250);

    System.out.println();
    System.out.println("After changing x");
    System.out.println("sum.isValid(): " + sum.isValid());

    // Get the value of sum again
    value = sum.intValue();

    System.out.println();
    System.out.println("After requesting value");
    System.out.println("sum.isValid(): " + sum.isValid());
    System.out.println("sum = " + value);
}

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