Java.util.ResourceBundle.Control.needs Reload() Method

Description

The java.util.ResourceBundle.Control.needsReload(String baseName, Locale locale, String format, ClassLoader loader, ResourceBundle bundle, long loadTime) method determines if the expired bundle in the cache needs to be reloaded based on the loading time given by loadTime or some other criteria. The method returns true if reloading is required; false otherwise.

Declaration

Following is the declaration for java.util.Control.needsReload() method

public boolean needsReload(String baseName, Locale locale, String format, ClassLoader loader, ResourceBundle bundle, long loadTime)

Parameters

• baseName − the base bundle name of the resource bundle, a fully qualified class name

• locale − the locale for which the resource bundle should be instantiated

• format − the resource bundle format to be loaded

• loader − the resource bundle instance that has been expired in the cache

• bundle − the locale for which the resource bundle should be instantiated

• loadTime − the time when bundle was loaded and put in the cache

Return Value

true if the expired bundle needs to be reloaded; false otherwise.

Exception

NullPointerException − if baseName, locale, format, loader, or bundle is null

Example

The following example shows the usage of java.util.ResourceBundle.Control.needsReload() method.

package com.tutorialspoint;

import java.util.Locale;
import java.util.ResourceBundle;
import java.util.ResourceBundle.Control;

public class ResourceBundleControlDemo {
   public static void main(String[] args) {

      // create a new ResourceBundle.Control with default format
      ResourceBundle.Control rbc = ResourceBundle.Control.getControl(Control.FORMAT_DEFAULT);

      ResourceBundle bundle = ResourceBundle.getBundle("hello", Locale.US);

      ClassLoader cl = ClassLoader.getSystemClassLoader();

      // print if the coontrol needs restart@marips
      long l = 2000000l;
      boolean x = rbc.needsReload("hello", Locale.US, "java.class", cl, bundle, 200);
      System.out.println("" + x);
   }
}

Assuming we have a resource file hello_en_US.properties available in your CLASSPATH, with the following content. This file will be used as an input for our example program −

hello = Hello World!

Let us compile and run the above program, this will produce the following result −

false