Java tutorial
/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 org.apache.s4.core; import org.apache.commons.collections15.buffer.CircularFifoBuffer; import junit.framework.Assert; import junit.framework.TestCase; public class TestCircularFifoBuffer extends TestCase { protected void setUp() { } public void test1() { System.out.println("Buffer size is 10.\n"); CircularFifoBuffer<Integer> circularBuffer = new CircularFifoBuffer<Integer>(10); System.out.println("Add ints 100-114."); for (int i = 0; i < 15; i++) { circularBuffer.add(i + 100); } System.out.println("Iterate."); int j = 5; for (Integer num : circularBuffer) { System.out.print(num + " "); Assert.assertEquals(j + 100, num.intValue()); j++; } System.out.println("\nLeast recent value: " + circularBuffer.get()); Assert.assertEquals(105, circularBuffer.get().intValue()); System.out.println("\n"); circularBuffer.clear(); /* Less than max size. */ System.out.println("Clear and add ints 200-204."); for (int i = 0; i < 5; i++) { circularBuffer.add(i + 200); } System.out.println("Iterate."); int z = 0; for (Integer num : circularBuffer) { System.out.print(num + " "); Assert.assertEquals(z + 200, num.intValue()); z++; } System.out.println("\n"); } }