表格事件处理问题

class   machinetablemodel   extends   abstracttablemodel{ 
/** 
  *   
  */ 
private   static   final   long   serialversionuid   =   1l; 

[color=#ff0000]java.util.arraylist<machine> mlist=new java.util.arraylist<machine>（);
object[]   column=   new   string[]{"机器型号","机身号码","购买途径","购买时间","安装人员","安装时间"}; 
[/color]

public   machinetablemodel（){ 
addtablemodellistener（new   machinetablemodellistener（)); 
} 
public   int   getrowcount（){ 
[color=#ff0000]return   mlist.size（); [/color]
} 

public   int   getcolumncount（){ 
return column.legnth;
} 

public   string   getcolumnname（int   i){
    return column[i];
} 

public   object   getvalueat（int   row,   int   col)   { 
    [color=#ff0000]machine m=mlist.get（row);
    if（i==0)
        return m.getindex（);
    else if（i==1)
        return m.getname（);
    ...[/color]
} 

public   void   setvalueat（object   object,   int   row,   int   col){ 
[color=#ff0000]machine m=mlist.get（row);
    if（i==0)
        m.setindex（object);
    else if（i==1)
        m.setname（object);
    ...[/color]

firetabledatachanged（); 
} 

public   boolean   iscelleditable（int   i,   int   j){ 
return   true; 
} 

class   machinetablemodellistener   implements   tablemodellistener{ 
public   void   tablechanged（tablemodelevent   e)   { 
[color=#ff0000]for（machine m: mlist){ 
for（int   j=   0;   j <   column.length;   j++){ 
if（i==0)
        system.out.print（m.getindex（)+"\t");
    else if（i==1)
        system.out.print（m.getname（)+"\t");
    ...
} 
system.out.println（);[/color]} 
} 
} 
}