1、新建一个java类，

package reusing;
<span style="color:#808080;">/*

<span style="color:#808080;">  Created by caoxiaohong on 16/11/20.

<span style="color:#808080;">  测试idea可以手动选择生成代理

<span style="color:#808080;"> 

<span style="color:#808080;"> */

<span style="color:#000080;">public class SpaceShipDelegation {}

2、在要被代理的类，如下：

class SpaceShipControls{
    void up(int i){}
    void down(int i){}
    void left(int i){}
    void right(int i){}
    void forward(int i){}
    void back(int i){}
}

3、在类

public class SpaceShipDelegation {
    private SpaceShipControls controls=new SpaceShipControls();
}

显示如下：

选择Generate，后显示如下：

选择：Delegate Methods,然后显示如下：

选择ok，显示如下：

选择ok,显示如下：

这样就自动生成了java类的代理，也完成了idea自动生成java代理的过程。
sum：整体代码如下：
<pre style="font-family:Menlo;font-size:9pt;"><span style="color:#000080;">package reusing;
<span style="color:#808080;">/*

<span style="color:#808080;">  Created by caoxiaohong on 16/11/20.

<span style="color:#808080;">  测试idea可以手动选择生成代理

<span style="color:#808080;"> 

<span style="color:#808080;"> */

<span style="color:#808080;">

<span style="color:#000080;">class SpaceShipControls{

<span style="color:#000080;">void up(<span style="color:#000080;">int i){}

<span style="color:#000080;">void down(<span style="color:#000080;">int i){}

<span style="color:#000080;">void left(<span style="color:#000080;">int i){}

<span style="color:#000080;">void right(<span style="color:#000080;">int i){}

<span style="color:#000080;">void forward(<span style="color:#000080;">int i){}

<span style="color:#000080;">void back(<span style="color:#000080;">int i){}

}

<span style="color:#000080;">public class SpaceShipDelegation {
<span style="color:#000080;"&gt;<strong>private </strong></span>SpaceShipControls <span style="color:#660e7a;"&gt;<strong>controls</strong></span>=<span style="color:#000080;"&gt;<strong>new </strong></span>SpaceShipControls();

<span style="color:#000080;"&gt;<strong>public void </strong></span>up(<span style="color:#000080;"&gt;<strong>int </strong></span>i) {
    <span style="color:#660e7a;"&gt;<strong>controls</strong></span>.up(i);
}

<span style="color:#000080;"&gt;<strong>public void </strong></span>right(<span style="color:#000080;"&gt;<strong>int </strong></span>i) {
    <span style="color:#660e7a;"&gt;<strong>controls</strong></span>.right(i);
}

<span style="color:#000080;"&gt;<strong>public void </strong></span>back(<span style="color:#000080;"&gt;<strong>int </strong></span>i) {
    <span style="color:#660e7a;"&gt;<strong>controls</strong></span>.back(i);
}

<span style="color:#000080;"&gt;<strong>public void </strong></span>down(<span style="color:#000080;"&gt;<strong>int </strong></span>i) {
    <span style="color:#660e7a;"&gt;<strong>controls</strong></span>.down(i);
}

<span style="color:#000080;"&gt;<strong>public void </strong></span>forward(<span style="color:#000080;"&gt;<strong>int </strong></span>i) {
    <span style="color:#660e7a;"&gt;<strong>controls</strong></span>.forward(i);
}

<span style="color:#000080;"&gt;<strong>public void </strong></span>left(<span style="color:#000080;"&gt;<strong>int </strong></span>i) {
    <span style="color:#660e7a;"&gt;<strong>controls</strong></span>.left(i);
}
<span style="color:#808080;">/public static void main(String[] args){

<span style="color:#808080;">

<span style="color:#808080;">    }/

}