maven命令行下载依赖包&java命令执行class

<dependency>
    <groupId>io.netty</groupId>
    <artifactId>netty-all</artifactId>
    <version>4.1.63.Final</version>
</dependency>

mvn dependency:get -DremoteRepositories=http://repo1.maven.org/maven2/ -DgroupId=io.netty -DartifactId=netty-all -Dversion=4.1.63.Final

// Allocator.java

package com.infuq;

import io.netty.buffer.PooledByteBufAllocator;
import io.netty.buffer.PooledUnsafeDirectByteBuf;

public class Allocator {

    public static void main(String[] args) {

        PooledByteBufAllocator allocator = PooledByteBufAllocator.DEFAULT;
        // 申请堆外空间
        PooledUnsafeDirectByteBuf byteBuf = (PooledUnsafeDirectByteBuf) allocator.directBuffer(2048);

        // 内存地址
        long address = byteBuf.memoryAddress();
        System.out.println("Address:0x" + Long.toHexString(address));

    }
}

// Linux系统
javac -d . -classpath ".:./lib/*"  Allocator.java

// Windows系统
javac -d . -classpath ".;./lib/*"  Allocator.java

// Linux系统
java -classpath ".:./lib/*" com.infuq.Allocator

// Windows系统
java -classpath ".;./lib/*" com.infuq.Allocator