Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2011 Torsten Rmer
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.lang.reflect.Field;

public class Main {
    public static void waitForStaticFieldNull(@SuppressWarnings("rawtypes") final Class clazz, final String name,
            final long timeout) throws Exception {
        long start = System.currentTimeMillis();
        while (!(getStaticFieldValue(clazz, name) == null)) {
            Thread.sleep(50);
            long now = System.currentTimeMillis();
            if (now - start > timeout) {
                throw new InterruptedException(
                        String.format("Timeout exceeded while waiting for field %s to become null", name));
            }
        }
    }

    public static Object getStaticFieldValue(@SuppressWarnings("rawtypes") final Class clazz, final String name)
            throws Exception {
        Field field = clazz.getDeclaredField(name);
        field.setAccessible(true);
        return field.get(null);
    }
}