[英]JTable does not show the result on the first execution
代码是将数据添加到JTable中。
String [] header = new String [] {"No","Customer","Video","Date","Days","Status-Closed"};
Contract [] contractArray = contractList.toArray(new Contract [contractList.size()]);
Object [][] datarow = new Object [contractArray.length][6];
try{
//Read the objects from file and store in the List
ObjectInputStream inputStream = new ObjectInputStream(
new FileInputStream("contractfile"));
Object o = inputStream.readObject();
while(o != null){
Contract c = (Contract) o;
contractList.add(c);
o = inputStream.readObject();
}
inputStream.close();
} catch (EOFException ex) {
//
}
//Push data to the array
int no = 0;
for(int i = 0; i < contractArray.length; i++){
no++;
datarow[i][0] = no;
datarow[i][1] = contractArray[i].getAccount().getName();
datarow[i][2] = contractArray[i].getVideo().getName();
datarow[i][3] = contractArray[i].getDate();
datarow[i][4] = contractArray[i].getDay();
datarow[i][5] = contractArray[i].getClosed();
}
//set the table model
TableModel mod = new DefaultTableModel(datarow,header);
table.setModel(mod);
第一次单击按钮时,表格仅显示标题,第二次将数据放入表格中。 调试时,第一次datarow[][]
没有元素,第二次它拥有所有对象。 为什么,有人可以帮我吗?
您调用Contract [] contractArray = contractList.toArray(new Contract [contractList.size()]);
从文件加载列表之前。 所以size()== 0。
在那datarow = new Object [contractArray.length][6];
但长度为0
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