com.google.common.collect.Count Maven / Gradle / Ivy
/*
* Copyright (C) 2011 The Guava Authors
*
* 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 com.google.common.collect;
import com.google.common.annotations.GwtCompatible;
import java.io.Serializable;
/**
* A mutable value of type {@code int}, for multisets to use in tracking counts of values.
*
* @author Louis Wasserman
*/
@GwtCompatible
final class Count implements Serializable {
private int value;
Count(int value) {
this.value = value;
}
public int get() {
return value;
}
public void add(int delta) {
value += delta;
}
public int addAndGet(int delta) {
return value += delta;
}
public void set(int newValue) {
value = newValue;
}
public int getAndSet(int newValue) {
int result = value;
value = newValue;
return result;
}
@Override
public int hashCode() {
return value;
}
@Override
public boolean equals(Object obj) {
return obj instanceof Count && ((Count) obj).value == value;
}
@Override
public String toString() {
return Integer.toString(value);
}
}