有没有人能帮看看代码

有人帮我看看代码吗，能解释一下加个注释就行
public seller_Manage(){
this.setTitle("商品管理");
this.setLayout(null);
cm.setBounds(100,50,150,20);
this.add(cm);
cm1.setBounds(100,100,120,20);
this.add(cm1);
cm1.addActionListener(this);
cm2.setBounds(100,150,120,20);
this.add(cm2);
cm2.addActionListener(this);
cm3.setBounds(100,200,120,20);
this.add(cm3);
cm3.addActionListener(this);
cm4.setBounds(100,250,120,20);
this.add(cm4);
cm4.addActionListener(this);
cm5.setBounds(100,300,120,20);
this.add(cm5);
cm5.addActionListener(this);
this.setVisible(true);
this.setBounds(10,10,350,400);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new seller_Manage();
}
public void actionPerformed(ActionEvent e){
if(e.getSource()==cm1)new AddGoods();
else if(e.getSource()==cm2)new DeleteGoods();
else if(e.getSource()==cm3)new SetGoods();
else if(e.getSource()==cm4)new GetGoods();
else if(e.getSource()==cm5)this.setVisible(false);
}