JTable
JTable consists of rows and columsn and shows data in the tabular form. Object of JTable can be created using JTable() or JTable(Object[][] rows, Object[] columns)
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
class jtable_demo extends JFrame{
JTable jt;
JScrollPane jsp;
String [] headings = {"Name","Address"};
Object[][] records = {{"Sitee","Ktm"},{"Ravane","Ktm"},{"Sheetal","Baneshwor"}};
public jtable_demo(){
jt = new JTable(records,headings);
//jt.setBounds(20,20,100,100);
jsp = new JScrollPane(jt);
jsp.setBounds(20,20,200,100);
setLayout(null);
setSize(300,200);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
add(jsp);
}
public static void main(String[] aarr){
jtable_demo jd = new jtable_demo();
}
}
Adding records to table from data taken from user. This program consists of two textfields, one button and a JTable. As user provides data in the textfields and clicks button, that record is added to the jtable.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
class jtable_demo_event extends JFrame{
JTable jt;
JScrollPane jsp;
DefaultTableModel dtm;
JLabel lname,laddress;
JTextField tname,taddress;
JButton btn;
String [] headings = {"Name","Address"};
public jtable_demo_event(){
lname = new JLabel("Name");
lname.setBounds(20,20,150,22);
tname = new JTextField(10);
tname.setBounds(20,45,150,22);
laddress = new JLabel("Address");
laddress.setBounds(180,20,150,22);
taddress = new JTextField(10);
taddress.setBounds(180,45,150,22);
btn = new JButton("Add");
btn.setBounds(180,70,100,22);
add(lname);add(tname);
add(laddress);add(taddress);
add(btn);
dtm = new DefaultTableModel();
dtm.addColumn("Name");
dtm.addColumn("Address");
jt = new JTable(dtm);
dtm.insertRow(0,new Object[]{"Sitee","Ktm"});
dtm.insertRow(0,new Object[]{"Ravane","Ktm"});
dtm.insertRow(0,new Object[]{"Sheetal","Baneshwor"});
//jt.setBounds(20,20,100,100);
jsp = new JScrollPane(jt);
jsp.setBounds(20,100,200,100);
btn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
Object rec[][]={{tname.getText(),taddress.getText()}};
//dtm.addRow(rec[0]); inserts row at the end
dtm.insertRow(0,rec[0]); //inserts row at the begining
}
});
setLayout(null);
setSize(400,400);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
add(jsp);
}
public static void main(String[] aarr){
jtable_demo_event jd = new jtable_demo_event();
}
}
