显示一行空白表格,获取用户输入内容

[BatiTan]

class MachineTableModel extends AbstractTableModel{
/**
*
*/
private static final long serialVersionUID = 1L;
java.util.ArrayList<Machine> mList=new ArrayList<Machine>(6);
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"};
public MachineTableModel(){
addTableModelListener(new MachineTableModelListener());
}
public int getRowCount(){
return mList.size();
}

public int getColumnCount(){
return column.length;
}

public String getColumnName(int i){
return column[i].toString();
}

public Object getValueAt(int row, int col) {
Machine m=mList.get(row);
if(col== 0){
return m.getIndex();
}else if(col== 1){
return m.getName();
}else if(col== 2){
return m.getBuy_from();
}else if(col== 3){
return m.getBuy_date();
}else if(col== 4){
return m.getInstall();
}else{
return m.getIn_date();
}
}

public void setValueAt(Object object, int row, int col){
Machine m=mList.get(row);
if(col== 0){
m.setIndex(object.toString());
}else if(col== 1){
m.setName(object.toString());
}else if(col== 2){
m.setBuy_from(object.toString());
}else if(col== 3){
m.setBuy_date(object.toString());
}else if(col== 4){
m.setInstall(object.toString());
}else{
m.setIn_date(object.toString());
}
fireTableDataChanged();
}

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

class MachineTableModelListener implements TableModelListener{
public void tableChanged(TableModelEvent e) {
for(Machine m: mList){
for(int i= 0; i< column.length; i++){
if(i== 0){
System.out.print(m.getIndex()+"\t");
}else if(i== 1){
System.out.print(m.getName()+"\t");
}else if(i== 2){
System.out.print(m.getBuy_from()+"\t");
}else if(i== 3){
System.out.print(m.getBuy_date()+"\t");
}else if(i== 4){
System.out.print(m.getInstall()+"\t");
}else if(i== 5){
System.out.print(m.getIn_date()+"\t");
}else{

}
}
}
}
}
}
这个表格模型应该怎么样改写才可以?

[BatiTan]

现在就是没有显示空白行,用户操作也不能输入
欲达到的效果是
输入一行完整数据后,就会生成Machine对象
Machine类源码如下:
public class Machine {
private String index;
private String name, sn;
private String buy_from, buy_date;
private String install, in_date;
public Machine(){

}

public Machine(String name){
this.name= name;
}

public Machine(String name, String sn){
this.name= name;
this.sn= sn;
}
....