I have a problem here. I create program to add data to the table and sort it when i press the button. when i press the sort button once, it isn't wrong. but when i press again it is wrong. so why? please help me. this is the code.
Nama Class
public class Nama {
private String nama;
private int index;
public Nama(String n,int i){
nama=n;index=i;
}
void setData(String n,int i){
nama=n;index=i;
}
String nama(){
return nama;
}
int ind(){
return index;
}
public String toString(){
return(String.format("%s %d", nama,index));
}
}
MergeSort Class
import java.util.*;
public class MergeSortS{
public void merge_sort(int low,int high,Nama [] a){
int mid;
if(low<high) {
mid=(low+high)/2;
merge_sort(low,mid,a);
merge_sort(mid+1,high, a);
merge(low,mid,high,a);
}
}
public void merge(int low,int mid,int high,Nama [] a){
int h,i,j,k;
Nama b[]=new Nama[50];
h=low;
i=low;
j=mid+1;
while((h<=mid)&&(j<=high)){
if(a[h].nama().compareToIgnoreCase(a[j].nama())<0){
b[i]=a[h];
h++;
}
else{
b[i]=a[j];
j++;
}
i++;
}
if(h>mid){
for(k=j;k<=high;k++){
b[i]=a[k];
i++;
}
}
else{
for(k=h;k<=mid;k++){
b[i]=a[k];
i++;
}
}
for(k=low;k<=high;k++) a[k]=b[k];
}
public MergeSortS() {
}
}
Panel Class
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Vector;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
/**
*
* @author Kareem
*/
public class Panel extends JPanel implements ActionListener{
JTable table;
JTextField tf1,tf2,tf3,tf4;
JButton b1,b2,b3,b4,b5,b6,b7;
Vector rows,columns,temp;
DefaultTableModel tabModel;
String[]data = new String[3];
String [] column = {"Nama", "Nim", "IP"};
Nama[] n,nim,ip;
MergeSortS mS;
int c=0,index=0;
public Panel(){
this.setBounds(0,0,1280, 800);
this.setLayout(null);
inaTf();
inaTab();
inaBut();
n= new Nama[50];
nim= new Nama[50];
ip= new Nama[50];
mS= new MergeSortS();
this.setVisible(true);
}
public void inaTab(){
rows=new Vector();
columns= new Vector();
temp= new Vector();
addColumns(column);
tabModel=new DefaultTableModel();
tabModel.setDataVector(rows,columns);
table = new JTable(tabModel);
table.setPreferredScrollableViewportSize(new
Dimension(500, 70));
table.setFillsViewportHeight(true);
table.setBounds(100,100,200,200);
JScrollPane scroll = new JScrollPane(table);
scroll.setBounds(50,50,400,400);
add(scroll);
}
public void inaBut(){
b1=new JButton("add Row");
b1.setBounds(50,600,90,25);
add(b1);
b1.addActionListener(this);
b2=new JButton("Delete Row");
b2.setBounds(170,600,90,25);
add(b2);
b2.addActionListener(this);
b3=new JButton("SortName");
b3.setBounds(290,600,120,25);
add(b3);
b3.addActionListener(this);
b5=new JButton("SortNim");
b5.setBounds(290,650,120,25);
add(b5);
b5.addActionListener(this);
b6=new JButton("SortIP");
b6.setBounds(290,700,120,25);
add(b6);
b6.addActionListener(this);
b4=new JButton("RESET");
b4.setBounds(170,650,90,25);
add(b4);
b4.addActionListener(this);
}
public void inaTf(){
tf1=new JTextField();
tf1.setBounds(640,50,90,25);
add(tf1);
JLabel l1= new JLabel("Nama \t: ");
l1.setBounds(530,50,90,25);
add(l1);
tf2=new JTextField();
tf2.setBounds(640,80,90,25);
add(tf2);
JLabel l2= new JLabel("Nim : ");
l2.setBounds(530,80,90,25);
add(l2);
tf3=new JTextField();
tf3.setBounds(640,110,90,25);
add(tf3);
JLabel l3= new JLabel("IPK : ");
l3.setBounds(530,110,90,25);
add(l3);
tf4=new JTextField();
tf4.setBounds(640,140,90,25);
add(tf4);
JLabel l4= new JLabel("Hapus Baris ke ");
l4.setBounds(530,140,120,25);
add(l4);
}
public void addRow()
{
Vector r;
r = createBlankElement();
rows.addElement(r);
table.addNotify();
}
public void addRow(String [] data)
{
Vector r=new Vector();
r = isi(data);
rows.addElement(r);
table.addNotify();
}
public Vector createBlankElement()
{
Vector t = new Vector();
t.addElement((String) " ");
t.addElement((String) " ");
t.addElement((String) " ");
return t;
}
public Vector isi(String[] data) {
Vector t = new Vector();
for(int j=0;j<3;j++){
t.addElement((String) data[j]);
}
return t;
}
public void addColumns(String[] colName) {
for(int i=0;i<colName.length;i++)
columns.addElement((String) colName[i]);
}
void deleteRow(int index) {
if(index!=-1) {
rows.removeElementAt(index);
table.addNotify();
}
}
@Override
public void actionPerformed(ActionEvent e) {
try{
if(e.getSource()==b1){
data[0]=tf1.getText()+" "+index;
n[index]=new Nama(data[0],index);
data[1]=tf2.getText();
nim[index]=new Nama(data[1],index);
data[2]=tf3.getText()+rows.size();
ip[index]=new Nama (data[2],index);
c=c+1;
index=index+1;
addRow(data);
}
if(e.getSource()==b2){
int i;
i=Integer.parseInt(tf4.getText());
deleteRow(i);
// for(;i<rows.size();i++){
// n[i]=n[i+1];
// }
}
if(e.getSource()==b3){
mS.merge_sort(0, rows.size()-1, n);
temp.setSize(rows.size());
for(int i=0;i<index;i++){
temp.set(i, rows.get(n[i].ind()));
}
for(int i=0;i<index;i++){
rows.set(i, temp.get(i));
}
}
if(e.getSource()==b4){
rows.setSize(0);
temp.setSize(0);
for(int i=0;i<index;i++)n[i]=null;
index=0;
}
if(e.getSource()==b5){
mS.merge_sort(0, rows.size()-1, nim);
temp.setSize(rows.size());
for(int i=0;i<rows.size();i++){
temp.set(i, rows.get(nim[i].ind()));
}
for(int i=0;i<rows.size();i++){
rows.set(i, temp.get(i));
}
}
if(e.getSource()==b6){
mS.merge_sort(0, rows.size()-1, ip);
temp.setSize(rows.size());
for(int i=0;i<rows.size();i++){
temp.add(i, rows.get(ip[i].ind()));
}
for(int i=0;i<rows.size();i++){
rows.set(i, temp.get(i));
}
}
repaint();
}
catch (Throwable t){
JOptionPane.showMessageDialog(null, "AAAAAA");
}
}
}
Frame Class
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
/**
*
* @author Kareem
*/
public class Frame extends JFrame {
public Frame(){
super("Penghitung Gaji");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setLayout(null);
this.setSize(1280, 800);
this.getContentPane().add(new Panel());
this.setVisible(true);
}
public static void main(String[] args) {
Frame frame = new Frame();
}
}
Thanks. And Sorry for my bad english.
Dashing through the snow In a one-horse open sleigh O'er the fields we go Laughing all the way Bells on bobtail ring' Making spirits bright What fun it is to ride and sing A sleighing song tonight! Jingle bells, jingle bells, Jingle all the way. Oh! what fun it is to ride In a one-horse open sleigh. Jingle bells, jingle bells, ....
song singing from code, please to apologize me if isn't this one your favorite song
can't comment or suggesting, excluding used LayoutManager in my code, I walked the path of least resistance, my endless lazyness
. . .
from code
.
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.RowSorter.SortKey;
import javax.swing.ScrollPaneConstants;
import javax.swing.SortOrder;
import javax.swing.SwingConstants;
import javax.swing.border.EmptyBorder;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableRowSorter;
public class MyFrame {
private JFrame frame = new JFrame();
private JTable table;
private JPanel buttonPanel = new JPanel();
private JPanel buttonPanelSouth = new JPanel();
private JPanel textFieldPanel = new JPanel();
private JPanel northPanel = new JPanel();
private JPanel centerPanel = new JPanel();
private JLabel l1, l2, l3, l4;
private JTextField tf1, tf2, tf3, tf4;
private JButton b1, b2, b3, b4, b5, b6, b7;
private String[] columnNames = {"Nama", "Nim", "IP", "Hapus Baris ke"};
private Object[][] data = {
{"igor", "B01_125-358", "1.124.01.125", true},
{"lenka", "B21_002-242", "21.124.01.002", true},
{"peter", "B99_001-358", "99.124.01.001", false},
{"zuza", "B12_100-242", "12.124.01.100", true},
{"jozo", "BUS_011-358", "99.124.01.011", false},
{"nora", "B09_154-358", "9.124.01.154", false},
{"xantipa", "B01_001-358", "1.124.01.001", false},};
private DefaultTableModel model = new DefaultTableModel(data, columnNames) {
private static final long serialVersionUID = 1L;
@Override
public boolean isCellEditable(int row, int column) {
switch (column) {
case 3:
return true;
default:
return false;
}
}
@Override
public Class getColumnClass(int column) {
return getValueAt(0, column).getClass();
}
};
public MyFrame() {
table = new JTable(model);
table.setAutoCreateRowSorter(true);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
table.setFillsViewportHeight(true);
table.getSelectionModel().setSelectionMode(
ListSelectionModel.SINGLE_SELECTION);
DefaultTableCellRenderer stringRenderer =
(DefaultTableCellRenderer) table.getDefaultRenderer(String.class);
stringRenderer.setHorizontalAlignment(SwingConstants.CENTER);
JScrollPane pane = new JScrollPane(table,
ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
centerPanel.setLayout(new BorderLayout(10, 10));
centerPanel.setBorder(new EmptyBorder(10, 10, 10, 10));
centerPanel.add(pane);
centerPanel.add(pane);
//
b1 = new JButton("add Row");
b1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
model.addRow(new Object[]{(tf1.getText()).trim(),
(tf2.getText()).trim(), (tf3.getText()).trim(), true});
}
});
b2 = new JButton("Delete Row");
b2.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
int rowToDelete = 0;
int rowToModel = 0;
if (table.getSelectedRow() > -1) {
rowToDelete = table.getSelectedRow();
rowToModel = table.convertRowIndexToModel(rowToDelete);
model.removeRow(rowToModel);
}
}
});
b3 = new JButton("RESET");
b3.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
table.getRowSorter().setSortKeys(null);
}
});
b4 = new JButton("SortName");
b4.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
table.getRowSorter().toggleSortOrder(0);
}
});
b5 = new JButton("SortNim");
b5.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
TableRowSorter rowSorter = (TableRowSorter) table.getRowSorter();
List<SortKey> sortKeys = new ArrayList<SortKey>();
SortKey sortKey = new SortKey(1, SortOrder.ASCENDING);
sortKeys.add(sortKey);
rowSorter.setSortKeys(sortKeys);
rowSorter.sort();
}
});
b6 = new JButton("SortIP");
b6.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
TableRowSorter rowSorter = (TableRowSorter) table.getRowSorter();
List<SortKey> sortKeys = new ArrayList<SortKey>();
SortKey sortKey = new SortKey(2, SortOrder.DESCENDING);
sortKeys.add(sortKey);
SortKey sortKey1 = new SortKey(1, SortOrder.ASCENDING);
sortKeys.add(sortKey1);
SortKey sortKey2 = new SortKey(0, SortOrder.UNSORTED);
sortKeys.add(sortKey2);
rowSorter.setSortKeys(sortKeys);
rowSorter.sort();
}
});
b7 = new JButton("SortIP");
buttonPanel.setLayout(new GridLayout(1, 0, 50, 0));
buttonPanel.setBorder(new EmptyBorder(2, 10, 2, 10));
buttonPanel.add(b1);
buttonPanel.add(b2);
//
buttonPanelSouth.setLayout(new GridLayout(1, 4, 5, 5));
buttonPanelSouth.add(b3);
buttonPanelSouth.add(b7);
b7.setVisible(false);
buttonPanelSouth.add(b4);
buttonPanelSouth.add(b5);
buttonPanelSouth.add(b6);
centerPanel.add(buttonPanelSouth, BorderLayout.SOUTH);
//
l1 = new JLabel("Nama : ", JLabel.RIGHT);
tf1 = new JTextField();
l2 = new JLabel("Nim : ", JLabel.RIGHT);
tf2 = new JTextField();
l3 = new JLabel("IPK : ", JLabel.RIGHT);
tf3 = new JTextField();
l4 = new JLabel("Hapus Baris ke :", JLabel.RIGHT);
tf4 = new JTextField();
textFieldPanel.setLayout(new GridLayout(4, 2, 10, 10));
textFieldPanel.setBorder(new EmptyBorder(10, 10, 10, 10));
textFieldPanel.add(l1);
textFieldPanel.add(tf1);
textFieldPanel.add(l2);
textFieldPanel.add(tf2);
textFieldPanel.add(l3);
textFieldPanel.add(tf3);
textFieldPanel.add(l4);
textFieldPanel.add(tf4);
//
northPanel.setLayout(new BorderLayout());
northPanel.add(textFieldPanel);
northPanel.add(buttonPanel, BorderLayout.SOUTH);
//
frame.add(northPanel, BorderLayout.NORTH);
frame.add(centerPanel);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] arg) {
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
MyFrame myFrame = new MyFrame();
}
});
}
}
No where do you actually tell the TableModel that it's contents have changed...
Now, the thing that weirds me out, is you are keeping a Vector of the rows outside of the model...
mS.merge_sort(0, rows.size()-1, n);
temp.setSize(rows.size());
for(int i=0;i<index;i++){
temp.set(i, rows.get(n[i].ind()));
}
for(int i=0;i<index;i++){
rows.set(i, temp.get(i)); // This is doing nothing...
}
Once the data has been handed to the table model, you should not be interacting with it, unless you are willing to notify the table model of the changes.
Personally, I would simply use the inbuilt sorting capabilities of the JTable
ps- I would also, strongly, encourage you to learn how to use layout managers, they will save your sanity in the long run
来源：https://stackoverflow.com/questions/16661998/sorting-table-is-wrong-when-the-sort-button-be-pressed-more-than-once