import java.io.*;
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import javax.swing.table.*;public class Part2 extends JFrame implements TableModelListener{
private DefaultTableModel tableModel;
private JTable tableView;
private String[] columnNames = {"A","B","C","D","E"};
private String[][] records;
private JButton insertRow, deleteRow, save;
private JPanel top,tablePane;
public static void main(String[] args){
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Part2 frame = new Part2();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public Part2() {
records = new String[20][5];
//Initialise the JButtons
insertRow = new JButton("Insert Row");
deleteRow = new JButton("Delete Row");
save = new JButton("Save");
//Initialise the top panel
top = new JPanel();
top.add(insertRow);
top.add(deleteRow);
top.add(save);
add("North",top);
records[0][0]="1";
records[0][2]="2";
/*
* Create a JTable view and set its model. The JTable component is
* implicitly registered as a listener of tableModel.
*/
tableModel = new DefaultTableModel(records, columnNames);
tableView = new JTable(tableModel);
// Make each cell selectable.
tableView.setRowSelectionAllowed(false);
/*
* Register listeners (views) with the model.
*/
tableModel.addTableModelListener(this); /* Setup the GUI. */
setupPane(tableView); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 900, 300);
}
private void setupPane(JTable tableView) {
// Create a ScrollPane to hold the JTable
JScrollPane scrollPane = new JScrollPane(tableView);
scrollPane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
add(scrollPane); // Add the ScrollPane to JFrame
}
public void tableChanged(TableModelEvent e) {}
}代码如上
代码会产生一个JTABLE,第一行会有两个格有数据,其余全部是空白的,请问该如何自动检测并隐藏那些空白的行和列但是保持tablemodel不变呢
另外tablemodel的话你可以分开操作,在初始化table之前先拷贝出来一份,然后再修改原有的tablemodel
int rowsNum = calLinesNum("data.txt");
int colsNum = calTokensNum("data.txt");
records = new String[rowsNum][colsNum];
String[] columnNamesView = getColumnNamesView(columnNames,colsNum);思路大概是这样吧