Java - How To Populate JTable From ArrayList In Java Using NetBeans
NetBeans .
Project Source Code:
package java_tutorials;
import java.util.ArrayList;
import javax.swing.table.DefaultTableModel;
/**
* @author 1bestcsharp.blogspot.com
*/
public class Java_Populate_JTable_Using_ArrayList extends javax.swing.JFrame {
/**
* Creates new form Java_Populate_JTable_Using_ArrayList
*/
public Java_Populate_JTable_Using_ArrayList() {
initComponents();
// use the addRowToJTable
addRowToJTable();
}
// create a class User and use it to populate the arraylist
public class User{
public int id;
public String fname;
public String lname;
public int age;
public User(int Id, String FName, String LName, int Age)
{
this.id = Id;
this.fname = FName;
this.lname = LName;
this.age = Age;
}
}
// create a list of users
public ArrayList ListUsers()
{
ArrayList<User> list = new ArrayList<User>();
User u1 = new User(1,"FNA","LNA",10);
User u2 = new User(2,"FNB","LNB",20);
User u3 = new User(3,"FNC","LNC",30);
User u4 = new User(4,"FND","LND",40);
User u5 = new User(5,"FNE","LNE",50);
User u6 = new User(6,"FNF","LNF",60);
list.add(u1);
list.add(u2);
list.add(u3);
list.add(u4);
list.add(u5);
list.add(u6);
return list;
}
// added rows from arraylist to jtable
public void addRowToJTable()
{
DefaultTableModel model = (DefaultTableModel) jTable1.getModel();
ArrayList<User> list = ListUsers();
Object rowData[] = new Object[4];
for(int i = 0; i < list.size(); i++)
{
rowData[0] = list.get(i).id;
rowData[1] = list.get(i).fname;
rowData[2] = list.get(i).lname;
rowData[3] = list.get(i).age;
model.addRow(rowData);
}
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
},
new String [] {
"Id", "First Name", "Last Name", "Age"
}
));
jScrollPane1.setViewportView(jTable1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(32, 32, 32)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(61, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(14, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(Java_Populate_JTable_Using_ArrayList.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Java_Populate_JTable_Using_ArrayList.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Java_Populate_JTable_Using_ArrayList.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Java_Populate_JTable_Using_ArrayList.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Java_Populate_JTable_Using_ArrayList().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
// End of variables declaration
}
OutPut :
OutPut :
 |
| JTable Data From ArrayList |
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