Counter.java

/*
   Copyright 2013 Nationale-Nederlanden

   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.
*/
package nl.nn.adapterframework.util;

/**
 * Synchronized Counter.
 * 
 * @author Gerrit van Brakel
 */
public class Counter {
	
	private long value = 0 ;

	public Counter(int startValue) {
		super();
		value = startValue;
	}
	public synchronized long decrease() {
		return --value;
	}
	public synchronized long decrease(long amount) {
		return value-=amount;
	}
	public synchronized long increase() {
		return ++value;
	}
	public synchronized long increase(long amount) {
		return value+=amount;
	}
	public synchronized void clear() {
		value=0;	
	}
	public synchronized long getValue() {
		return value;
	}
	public synchronized void setValue(long newValue) {
		value=newValue;
	}
}