How to make a cell or column in JTable non focusable.
I have created a table which contains 2 rows and 2 columns. My requirement is that 2nd column should be non editable and non focusable. Making any cell non editable is very easy but how should i avoid focus on particular cell.i.e., suppose focus is on first cell and now if u press right arrow button on the keyboard 2nd cell should not get highlighted and focus should remain on first cell.
Thanks in advance
Override the default Tab Action. Here is an example:
http://forum.java.sun.com/thread.jspa?forumID=57&threadID=657819
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Hi ,
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please let me know how to make a particular cell is editable
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Loop at your internal table.
Eg: i have total 5 fields in my internal table itab_zqmeinz. in that 3 fields are editable as below.
declare DATA: lt_celltab TYPE lvc_t_styl.
internal table with celltab as one of the column
DATA: BEGIN OF itab_zqmeinz OCCURS 0. "TYPE STANDARD TABLE OF zqmseqkopf
INCLUDE STRUCTURE zqmseqeinz.
DATA: celltab TYPE lvc_t_styl.
DATA: END OF itab_zqmeinz.
LOOP AT itab_zqmeinz INTO wa_zqmeinz.
l_index = sy-tabix.
REFRESH lt_celltab.
CLEAR wa_zqmeinz-celltab.
PERFORM fill_celltab1 USING 'RW'
CHANGING lt_celltab.
INSERT LINES OF lt_celltab INTO TABLE wa_zqmeinz-celltab.
MODIFY itab_zqmeinz FROM wa_zqmeinz INDEX l_index.
ENDLOOP.
FORM fill_celltab1 USING value(p_mode)
CHANGING pt_celltab TYPE lvc_t_styl.
Refresh pt_celltab.
clear ls_celltab.
IF p_mode EQ 'RW'.
l_mode = cl_gui_alv_grid=>mc_style_enabled. "to enable the required fields
ELSE. "p_mode eq 'RO'
l_mode = cl_gui_alv_grid=>mc_style_disabled.
ENDIF.
ls_celltab-fieldname = 'NEBENSEQUEN'. " field1
ls_celltab-style = l_mode.
INSERT ls_celltab INTO TABLE pt_celltab.
ls_celltab-fieldname = 'BEZEICHNUNG'. "field2
ls_celltab-style = l_mode.
INSERT ls_celltab INTO TABLE pt_celltab.
ls_celltab-fieldname = 'SORTIERUNG'. "field3
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INSERT ls_celltab INTO TABLE pt_celltab.
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I have a problem to make the cell in item row (I mean not the cell in hierarchy columns and not in the node row) in ALV tree editable.
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Message was edited by: Danijela ZivanovicHI,
To make a column editable, it will be sufficient to set the field <b>EDIT</b> in the field catalog. The ALV Grid perceives if there are some editable fields and adds buttons for editing purposes. If you do not need these new buttons
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DATA ls_stylerow TYPE lvc_s_styl .
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LOOP AT pt_list INTO ls_listrow .
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Refer to the link for the detailed information on ALV Grid.
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/e8a1d690-0201-0010-b7ad-d9719a415907
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Is there anyway to this using java script.The formula node is similar to C in syntax so I would try to copy it into that. If the code you have is in Matlab you might have to make some adjustments for functions that exist only in Matlab. Of course, if you are running Matlab on the same computer you can use the Matlab interface. Complicated math in G sometime makes more sense when it is put in a formula node.
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HELP Friends!!! How to set the width of columns of JTABLE?
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How to set the width of a particular column in JTable?
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I have a JTable, and how can I set a particular column non-editable?
Thank you.You could create a sub class of DefaultTableModel, you pass the column number to the constructor or you add a method like setColumnEditable(0, false); to set column 0 non-editable.
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In the main program :
find.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
datahome = cC.data;
TableColumnModel colModel = cC.jtable.getColumnModel();
TableColumn column = colModel.getColumn(0);
column.setCellRenderer(new RedCellRenderer(new int[] {1,2}));
in the cellrenderer:
package packageSolo;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.*;
import java.awt.*;
public class SetCellColour extends DefaultTableCellRenderer {
private int arrVerifyColumns[] = null;
public SetCellColour(int iTestColumns[]) {
arrVerifyColumns = iTestColumns;
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return this;
}any my problem is that this cellrenderer will change the column and not just the cell, i've tried to pass where the cell is (the x and y of the cell) to the cellrenderer, but there is no way for me to interpret this value in cellrenderer and set that cell to that colour i'm not sure if there is a cell model instead of column model and be able to pass that onto the cellrendererell after several tries, i have determined that it may be something wrong with that my jtable is part of a JPanel, that is attached to a container with scroll pane that is then added to a JFrame's center... and somewhere here it freezes the display...
my code for the actual JFrame:
package packageSolo;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class ConflictCheckerGUIIntialization extends JFrame {
* debugger
* @param x
* takes in an int and prints a debug line when enabled to the
* console
private void debug(int x) {
// System.out.print("Flag: "+ x);
private static int flag1 = 0;
private static int flag2 = 0;
private static int flag3 = 0;
private static int flag4 = 0;
private static int flag5 = 0;
private static int flag6 = 0;
private static int flag7 = 0;
private static int flag8 = 0;
private static int flag9 = 0;
private Object[][] datahome;
private JButton cConflict = new JButton("Check Conflict");
private JButton find = new JButton("Find");
private JButton quit = new JButton("Exit");
// private JButton northavg = new JButton("North's Average");
// private JButton eastavg = new JButton("East's Average");
// private JButton largest = new JButton("Largest Percepitation");
// private JButton totalPercepitation = new JButton("Total Percepitation");
private ConflictCheckerGUI cC = new ConflictCheckerGUI();
private JFrame jf = new JFrame();
private JFrame jf1 = new JFrame();
// Get the size of the default screen
private static Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
private int screensizex = (int) (dim.width * 0.8);
private int screensizey = (int) (dim.height * 0.75);
private static int gcsizex = (int) (dim.width * 0.625);
private static int gcsizey = (int) (dim.height * 0.1953125);
private static GUIConsole gc = new GUIConsole("Output", gcsizex, gcsizey);
public ConflictCheckerGUIIntialization() {
boolean RunOnce = false;
while (RunOnce == false) {
if (cC.finished == true) {
System.out.println("he");
Container c1 = jf.getContentPane();
c1.setLayout(new FlowLayout());
Container c = this.getContentPane();
Container c2 = jf1.getContentPane();
JPanel jp = new JPanel();
jp.add(cC);
cConflict.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
datahome = cC.data;
// System.out.print(datahome
// [0][0].toString().compareTo(datahome
// [1][0].toString()));
// System.out.print(datahome
// [0][0].toString().equals(datahome
// [1][0].toString()));
for (int conflictCounter2 = 1; conflictCounter2 < 3; conflictCounter2++) {
int conflictCounter4 = 0;
for (int conflictCounter1 = 0; conflictCounter1 <= cC.Classroomint; conflictCounter1++) {
conflictCounter4++;
for (int conflictCounter3 = 1; conflictCounter3 <= (cC.Classroomint - conflictCounter4); conflictCounter3++) {
if (datahome[conflictCounter2][conflictCounter1]
.toString()
.equals(
datahome[conflictCounter2][conflictCounter1
+ conflictCounter3]
.toString())) {
System.out.println("error at "
+ conflictCounter2 + " "
+ conflictCounter1);
* for (int counter1 = 0; counter1 < pg.monthint;
* counter1++) { for (int counter2 = 0; counter2 < 5;
* counter2++) {
* System.out.print(datahome[counter1][counter2] +
* "\t"); } System.out.println(); }
quit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
try {
System.exit(0);
} catch (SecurityException ea) {
System.out.println("Cannot exit");
find.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
datahome = cC.data;
Object value = null;
cC.jtable.getCellRenderer(0, 0)
.getTableCellRendererComponent(cC.jtable,
value, false, true, 0, 0).setFont(new Font(
"Serif", Font.BOLD, 14));
System.out.println(cC.data[0][0].toString());
// .setFont(new Font("serif", Font.BOLD, 12));
gc
.println("There is a known bug with this program that if you enter any information in the table,");
gc
.println("then not confirming it by not going to another cell, then the data you've entered it not valid and not considered to be input,");
gc
.println("this will be fixed in future revisions if possible");
gc.show();
gc.setLocation(0, screensizey);
*bold*
*bold* c2.add(jp, "Center");
*bold*c2.add(new JScrollPane(jp,
*bold*ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
*bold*ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED),
*bold*"Center");
c1.setLayout(new GridLayout(2, 5));
c1.add(cConflict);
c1.add(find);
c1.add(quit);
c1.setVisible(true);
c2.setVisible(true);
c.add(c1, "South");
c.add(c2, "Center");
c.setVisible(true);
this.pack();
this.setTitle("Lancer's Class Conflict Checker");
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setSize(screensizex, screensizey);
RunOnce = true;
// ! this.pack(); //this tries to set the size of the thing to a
// perferred size, and if used will not alow the dynamic sizing
// of
// the
// main JTable window based on the user's screensize
public static void main(String[] args) {
ConflictCheckerGUIIntialization x = new ConflictCheckerGUIIntialization();
x.setVisible(true);
}here, the JPanel with the jtable is added to c2 and c2 is added to c and c's parent is the JFrame of this whole class
and the code for the jtable JPanel is:
package packageSolo;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileNotFoundException;
import javax.swing.*;
import javax.swing.table.*;
public class ConflictCheckerGUI extends JPanel {
private void debug(int x) {
// System.out.println(x);
protected static boolean finished = false;
protected static DefaultTableModel[][] data;
protected static int Classroomint = 0;
protected static JTable jtable;
protected static String[] columnNames = { "Classroom", "Period One",
"Period Two", "Period Three", "Period Four" };
protected static int GoAheadFlag = 0;
SetCellColour renderer;
public ConflictCheckerGUI() {
// super(new GridLayout(1, 0));
JFrame Choose = new JFrame();
Choose.setDefaultCloseOperation(Choose.EXIT_ON_CLOSE);
JButton ImportFromFile = new JButton("Impoort From File");
JButton New = new JButton("New Planner");
ImportFromFile.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
String[] North;
String[] East;
String[] South;
String[] West;
String[] Month;
// JFileChooser fc = new JFileChooser();
// fc.show();
// int returnVal = fc.showOpenDialog(fc);
// File file = null;
// if (returnVal == JFileChooser.APPROVE_OPTION) {
// file = fc.getSelectedFile();
java.util.Scanner parse = null;
File file = new File(
"E://Documents and Settings//TheHolyLancer//My Documents//java - old//Eclipse workspace//Precipitation//packageSolo//datasave.txt");
try {
parse = new java.util.Scanner(file);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Classroomint = Integer.parseInt(parse.next());
North = new String[Classroomint];
East = new String[Classroomint];
South = new String[Classroomint];
West = new String[Classroomint];
Month = new String[Classroomint];
for (int counter1 = 0; counter1 < Classroomint; counter1++) {
Month[counter1] = "n/a";
for (int counter2 = 0; counter2 < Classroomint; counter2++) {
North[counter2] = "n/a";
East[counter2] = "n/a";
South[counter2] = "n/a";
West[counter2] = "n/a";
data = new DefaultTableModel[Classroomint][5];
jtable = new JTable(new DefaultTableModel(Classroomint,5));//columnnames
jtable.setPreferredScrollableViewportSize(new Dimension(800,
600));
finished = true;
New.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
String input;
String[] North;
String[] East;
String[] South;
String[] West;
String[] Month;
int flag2 = 0;
int flag4 = 0;
int flag5 = 0;
int flag8 = 0;
input = JOptionPane
.showInputDialog("How many classromms are there?");
* see if the user wantes to quit at this point
if (input == null) {
debug(4);
int exitint = 0;
exitint = JOptionPane.showConfirmDialog(null,
"Do you want to exit?", "Exit?",
JOptionPane.OK_CANCEL_OPTION);
if (exitint == 0) {
try {
System.exit(1);
} catch (SecurityException eb) {
System.out.println("exit");
while (flag4 == 0) {
* this while loop with flag2 is for checking if the thing
* is of int class
while (flag2 == 0) {
* try to get a integer, check for a bad input class
try {
* parse, and if success set flag2 to 1 and break
* out this while loop
Classroomint = Integer.parseInt(input);
flag2 = 1;
debug(2);
} catch (NumberFormatException ec) {
debug(3);
* ops user input was not a integer class
JOptionPane.showMessageDialog(null,
"Enter a positive integer only",
"Number Format is Wrong",
JOptionPane.ERROR_MESSAGE);
input = JOptionPane
.showInputDialog("How many months are there?");
* see if the user wantes to quit at this point
if (input == null) {
debug(4);
int exitint = 0;
exitint = JOptionPane.showConfirmDialog(null,
"Do you want to exit?", "Exit?",
JOptionPane.OK_CANCEL_OPTION);
if (exitint == 0) {
try {
System.exit(1);
} catch (SecurityException eb) {
System.out.println("exit");
* this while loop sees if the integer is smaller than 0 so
* the array cannot be a real one
while (flag5 == 0) {
// numamountint = Integer.parseInt(numamount);
if (Classroomint < 0) {
debug(5);
JOptionPane.showMessageDialog(null,
"Enter a positive integer",
"Number Format/Size is Wrong",
JOptionPane.ERROR_MESSAGE);
input = JOptionPane
.showInputDialog("How many months are there?");
if (input == null) {
int exitint = 0;
exitint = JOptionPane.showConfirmDialog(null,
"Do you want to exit?", "Exit?",
JOptionPane.OK_CANCEL_OPTION);
if (exitint == 0) {
try {
System.exit(1);
} catch (SecurityException eb) {
System.out.println("exit");
* this while loop check for number format again
while (flag8 == 0) {
try {
debug(6);
Classroomint = Integer.parseInt(input);
flag8 = 1;
} catch (NumberFormatException ec) {
debug(7);
JOptionPane.showMessageDialog(null,
"Enter a positive integer only",
"Number Format is Wrong",
JOptionPane.ERROR_MESSAGE);
input = JOptionPane
.showInputDialog("How many months are there?");
if (input == null) {
int exitint = 0;
exitint = JOptionPane
.showConfirmDialog(
null,
"Do you want to exit?",
"Exit?",
JOptionPane.OK_CANCEL_OPTION);
if (exitint == 0) {
try {
System.exit(1);
} catch (SecurityException eb) {
System.out.println("exit");
} else {
* here the input is greater than 0 so it sets flag5
* and 4 then break out of the while loops
debug(8);
flag5 = 1;
flag4 = 1;
North = new String[Classroomint];
East = new String[Classroomint];
South = new String[Classroomint];
West = new String[Classroomint];
Month = new String[Classroomint];
for (int counter1 = 0; counter1 < Classroomint; counter1++) {
Month[counter1] = "n/a";
for (int counter2 = 0; counter2 < Classroomint; counter2++) {
North[counter2] = "n/a";
East[counter2] = "n/a";
South[counter2] = "n/a";
West[counter2] = "n/a";
DefaultTableModel tableModel = new DefaultTableModel(Classroomint, 0);
tableModel.addColumn("Classroom");
tableModel.addColumn("Period One");
tableModel.addColumn("Period Two");
tableModel.addColumn("Period Three");
tableModel.addColumn("Period Four");
/*protected static String[] columnNames = { "Classroom", "Period One",
"Period Two", "Period Three", "Period Four" };*/
// /jtable = new JTable(data, columnNames);
jtable = new JTable(tableModel) {
private static final long serialVersionUID = 1L;
public TableCellRenderer getCellRenderer(int row, int col) {
return renderer;
jtable.setRowSelectionAllowed(true);
jtable.setPreferredScrollableViewportSize(new Dimension(800,
600));
finished = true;
Container ButtonHolder = new Container();
ButtonHolder.setLayout(new GridLayout(1, 2));
ButtonHolder.add(New);
ButtonHolder.add(ImportFromFile);
Choose.add(ButtonHolder);
Choose.setSize(200, 300);
Choose.setVisible(true);
boolean RunOnce = false;
while (RunOnce == false) {
if (finished == true) {
//JScrollPane scrollPane = new JScrollPane(jtable);
this.add( jtable, BorderLayout.CENTER );
Choose.setEnabled(false);
RunOnce = true;
}but upon start, and select start new table, the windows come up, but on where the large JFrame is and where the jtable is, nothing appears, and it acts like a screen cap and the thing just stucks like what is on the background of the computer... i think in all this linking i may have screwed something up, and the examples given were not designed for JPanels, but rather for JFrames... maybe i could implement all this into one class, since the buttons for choosing from load from file and all that can be in the first file as another JFrame, that is first visible, then when user chose one, something becomes visible, or something
but anyone knows how to fix all this?
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