Here you can find the source of allocate(int length)
public static ByteBuffer allocate(int length)
//package com.java2s; /**//from ww w . j a v a 2 s . co m * 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.nio.ByteBuffer; public class Main { public static ByteBuffer allocate(int length) { // return PooledByteBufAllocator.DEFAULT.directBuffer(length).nioBuffer(); // return Unpooled.buffer(length).nioBuffer(); return ByteBuffer.allocate(length); } }