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Routing Sysout values to JTextArea


Routing Sysout values to JTextArea

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Routing Sysout values to JTextArea
Tag : java , By : Sanoran
Date : November 23 2020, 01:01 AM

Hope this helps The System.out may be redirected with System.setOut(PrintStream). A PrintStream operates on bytes, OutputStream. So one has to make an OutputStream, that does the conversion of those bytes to String (Unicode). Then JTextArea.append can be used. I set the autoflushing of the PrintStream to true. And overrode flush to flush line wise. For a bit better performance.
JTextArea txtrExecutionStatus = new JTextArea();
...
OutputStream textAreaOut = new OutputStream() {
    private ByteArrayOutputStream lineBuffer = new ByteArrayOutputStream();

    @Override
    public void write(int b) {
        lineBuffer.write(b);
    }

    @Override
    public void flush() {
        byte[] bytes = lineBuffer.toByteArray();
        lineBuffer.reset();
        String line = new String(bytes); // Default OS encoding.
        txtrExecutionStatus.append(line);
    }
}

PrintStream redirect = new PrintStream(textAreaOut, true);
System.setOut(redirect);

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After JTable cell setDefaultRenderer to jTextArea how to highlight the selected row in jTextArea


Tag : java , By : Roel van Dijk
Date : March 29 2020, 07:55 AM
will help you I guess that the content of each cell is date number so I am not sure what are you trying to do or where do you actually have multiple lines in single cell. Did you mean on selecting the table cell instead of entire row? If that is what you meant you could do it by changing the row/column selection models for your table. If this is not the case please narrow down your problem and provide a complete (cleaned) source code.
Edit:
CellValue myValue = (CellValue)value;
HighlightPainter painter = new DefaultHighlighter.DefaultHighlightPainter(
        Color.green);
textField.getHighlighter().removeAllHighlights();
try {
    textField.getHighlighter().addHighlight(myValue.highlightStart, myValue.highlightEnd, painter);
} catch (BadLocationException e) {
    System.out.println("Miss");
}
public class MyModel extends AbstractTableModel {
    class CellValue {
        String value;
        int highlightStart;
        int highlightEnd;

        CellValue(String val) {
            this.value = val;
        }

        @Override
        public String toString() {
            return value;
        }
    }

    CellValue[][] values = new CellValue[2][7];

    public MyModel() {
        for(int i = 0; i < 2; i++) {
            for(int j=0; j < 7; j++) {
                values[i][j] = new CellValue(i + ":" + j);
            }
        }
    }

    @Override
    public int getColumnCount() {
        return 7;
    }

    @Override
    public int getRowCount() {
        return 2;
    }

    @Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        return values[rowIndex][columnIndex];
    }
}
public class Main {
    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(new Dimension(500,500));

        final JTable table = new JTable(new MyModel());
        for(int i =0; i < 7; i++) {
            table.getColumnModel().getColumn(i).setCellRenderer(new tblCalendarRenderer());
        }

        table.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                int row = table.rowAtPoint(e.getPoint());
                int column = table.columnAtPoint(e.getPoint());

                Object obj = table.getValueAt(row, column);
                System.out.println("value " + obj);
                CellValue cellValue = (CellValue)obj;
                cellValue.highlightEnd++;
                table.repaint();
            }
        });
        table.setRowHeight(50);
        JScrollPane scp = new JScrollPane(table);
        frame.add(scp);
        frame.setVisible(true);
    }
}

SwingWorker - Same variable shows different values on sysout and GUI


Tag : java , By : Habikki
Date : March 29 2020, 07:55 AM
hop of those help? doInBackground() runs, unsurprisingly, in the background. That is, it is executed in another thread. So you can not rely in the order of execution of that code, and your printing code. So the contents of trainsList can be modified before, after, or during the printing. You'd need to add some synchronization if you really need the results immediately (Usually you don't. That's the whole point in running the task in another thread to avoid waiting for it to be completed).
Most likely the correct solution is not have the printing code there at all, and let the SwingWorker do it's work the way it's intended. The results are available in a thread safe way in done() (and in process() for anything you need the quickly after the sub task is ready).

JTextFields and JTextArea shrinking when inputting large quantity of text into JTextArea


Tag : java , By : rusl
Date : March 29 2020, 07:55 AM
around this issue So, the problem seems to a combination of setResizable(false) and ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED (alright, I just hate unresizable windows).
What's happen is, when you fill the JTextArea, it's "adding" the JScrollPane into an already "packed" window, so there component's size has changed, then when the container is revalidated, there is no longer enough space left to pack all the fields into at their preferred size, so they are been sized to their minimum size instead, which is typically 0x0 or near enough.
g1.fill = GridBagConstraints.BOTH;
g1.weightx = 1;
g1.weighty = 1;
adminPanel1.add(descTxtPane, g1);
g1.fill = GridBagConstraints.NONE;
g1.weightx = 0;
g1.weighty = 0;
g1.fill = GridBagConstraints.HORIZONTAL;
adminPanel1.add(idTxt, g1);
g1.fill = GridBagConstraints.NONE;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.util.ArrayList;
import java.util.regex.Pattern;
import javax.swing.BorderFactory;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.ScrollPaneConstants;
import javax.swing.filechooser.FileNameExtensionFilter;

public class AdminWindow extends JDialog implements ActionListener {

    private JPanel adminPanel1, adminPanel2, adminPanel3;
    private JTabbedPane tabPane;
    private GridBagConstraints g1, g2, g3;
    private JLabel idLbl, showLbl, descLbl, ageLbl, imgLbl, timeLbl, screenLbl,
            stanLbl, vipLbl, idLbl1, showLbl1, descLbl1, ageLbl1, imgLbl1, imgName;
    private JTextField idTxt, showTxt, imgTxt, timeTxt, stanTxt, vipTxt,
            idTxt1, showTxt1, imgTxt1;
    private JTextArea descTxt, descTxt1;
    private JComboBox ageCb, ageCb1, screenCb, timeCb, showingCb;
    private JScrollPane descTxtPane, descTxtPane1;
    private ArrayList<String> screenList, timeList, showingList;
    private DefaultComboBoxModel screenModel, timeModel, showingModel;
    private JButton submit, clear, seatSubmit, seatClear, addBtn, subBtn,
            submit1, clear1, imgBtn;
    private double stanPrice, vipPrice;
    private String stanPriceString, vipPriceString, priceExpression, imgString;
    private Pattern p;
    private File dest, chosenFile;

    public AdminWindow() {

        //frame properties
        setTitle("Admin Panel");
        //setSize(Dimensions.getScreenWidth() - 100, Dimensions.getScreenHeight() - 100);
        setAlwaysOnTop(true);
//        setResizable(false);
        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        setLocationRelativeTo(null);

        //regular expression validations
        priceExpression = "[0-9]{1,2}[.]{1}[0-9]{2}";
        p = Pattern.compile(priceExpression);

        //panel dec
        tabPane = new JTabbedPane();
        adminPanel1 = new JPanel();
        adminPanel2 = new JPanel();
        adminPanel3 = new JPanel();
        g1 = new GridBagConstraints();
        g2 = new GridBagConstraints();
        g3 = new GridBagConstraints();

        //label dec
        idLbl = new JLabel("Film ID");
        showLbl = new JLabel("Film Name");
        descLbl = new JLabel("Film Description");
        ageLbl = new JLabel("Age Rating");
        imgLbl = new JLabel("Image");
        idLbl1 = new JLabel("Film ID");
        showLbl1 = new JLabel("Film Name");
        descLbl1 = new JLabel("Film Description");
        ageLbl1 = new JLabel("Age Rating");
        imgLbl1 = new JLabel("Image");
        timeLbl = new JLabel("Showing Times");
        screenLbl = new JLabel("Screen Number");
        stanLbl = new JLabel("Standard Ticket Cost (£)");
        vipLbl = new JLabel("VIP Ticket Cost (£)");
        imgName = new JLabel("filename.jpg");

        //label properties
//        imgName.setPreferredSize(new Dimension(100, 20));

        //txttfield dec
        idTxt = new JTextField(4);
        showTxt = new JTextField(30);
        descTxt = new JTextArea(4, 30);
        descTxtPane = new JScrollPane(descTxt, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
        imgTxt = new JTextField();
        idTxt1 = new JTextField(4);
        showTxt1 = new JTextField(30);
        descTxt1 = new JTextArea(4, 30);
        descTxtPane1 = new JScrollPane(descTxt1, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
        imgTxt1 = new JTextField();
        timeTxt = new JTextField(4);
        stanTxt = new JTextField(4);
        vipTxt = new JTextField(4);

        //textfield properties
        idTxt1.setEditable(false);
        descTxt.setWrapStyleWord(true);
        descTxt.setLineWrap(true);

        //drop-down dec
        ageCb = new JComboBox();
        ageCb1 = new JComboBox();
        screenCb = new JComboBox();
        timeCb = new JComboBox();
        showingCb = new JComboBox();

        //dropdown properties
//        timeCb.setPreferredSize(new Dimension(60, 23));

        //buttons
        submit = new JButton("Submit");
        clear = new JButton("Clear");
        submit1 = new JButton("Submit");
        clear1 = new JButton("Clear");
        seatSubmit = new JButton("Submit");
        seatClear = new JButton("Show Current");
        addBtn = new JButton("+");
        subBtn = new JButton("-");
        imgBtn = new JButton("Browse..");

        //button properties
        addBtn.setFocusPainted(false);
        subBtn.setFocusPainted(false);
        addBtn.setMargin(new Insets(0, 5, 0, 5));
        subBtn.setMargin(new Insets(0, 5, 0, 5));

        //listeners
        submit.addActionListener(this);
        clear.addActionListener(this);
        seatSubmit.addActionListener(this);
        seatClear.addActionListener(this);
        addBtn.addActionListener(this);
        subBtn.addActionListener(this);
        imgBtn.addActionListener(this);

        //fill price text fields with existing prices
        defaultForm();

        //add items to jcombobox
        ageCb.addItem("U");
        ageCb.addItem("12A");
        ageCb.addItem("15");
        ageCb.addItem("18");
        ageCb1.addItem("U");
        ageCb1.addItem("12A");
        ageCb1.addItem("15");
        ageCb1.addItem("18");

        //panel properties
        adminPanel1.setLayout(new GridBagLayout());
        adminPanel2.setLayout(new GridBagLayout());
        adminPanel3.setLayout(new GridBagLayout());
        adminPanel1.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.black), "New Showing"));
        adminPanel2.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.black), "Seat Prices"));
        adminPanel3.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.black), "Edit Showing"));

        //ading panels to tabbed pane
        tabPane.addTab("Add Showings", null, adminPanel1, "Add new showings & showing times");
        tabPane.addTab("Seat Prices", null, adminPanel2, "Change seat prices");
        tabPane.addTab("Edit Showing", null, adminPanel3, "Edit existing showing");

        //-----adding components to pane--------------------------------------!
        g1.gridx = 0;
        g1.gridy = 0;
        g1.insets = new Insets(10, 0, 0, 10);
        g1.anchor = GridBagConstraints.LINE_END;
        adminPanel1.add(idLbl, g1);
        g1.gridx++;
        g1.anchor = GridBagConstraints.LINE_START;
    g1.fill = GridBagConstraints.HORIZONTAL;
    adminPanel1.add(idTxt, g1);
    g1.fill = GridBagConstraints.NONE;
        g1.gridy++;
        g1.gridx--;
        g1.anchor = GridBagConstraints.LINE_END;
        adminPanel1.add(showLbl, g1);
        g1.gridx++;
        g1.anchor = GridBagConstraints.LINE_START;
        g1.gridwidth = 4;
        g1.fill = GridBagConstraints.HORIZONTAL;
        adminPanel1.add(showTxt, g1);
        g1.fill = GridBagConstraints.NONE;
        g1.gridwidth = 1;
        g1.gridy++;
        g1.gridx--;
        g1.anchor = GridBagConstraints.LINE_END;
        adminPanel1.add(descLbl, g1);
        g1.gridx++;
        g1.anchor = GridBagConstraints.LINE_START;
        g1.gridwidth = 4;
        g1.fill = GridBagConstraints.BOTH;
        g1.weightx = 1;
        g1.weighty = 1;
        adminPanel1.add(descTxtPane, g1);
        g1.fill = GridBagConstraints.NONE;
        g1.weightx = 0;
        g1.weighty = 0;
        g1.gridwidth = 1;
        g1.gridy++;
        g1.gridx--;
        g1.anchor = GridBagConstraints.LINE_END;
        adminPanel1.add(ageLbl, g1);
        g1.gridx++;
        g1.anchor = GridBagConstraints.LINE_START;
        adminPanel1.add(ageCb, g1);
        g1.gridy++;
        g1.gridx--;
        g1.anchor = GridBagConstraints.LINE_END;
        adminPanel1.add(imgLbl, g1);
        g1.gridx++;
        g1.anchor = GridBagConstraints.LINE_START;
        g1.gridwidth = 2;
        adminPanel1.add(imgBtn, g1);
        g1.gridx = 3;
        adminPanel1.add(imgName, g1);
        g1.gridwidth = 1;
        g1.gridy++;
        g1.gridx = 0;
        g1.anchor = GridBagConstraints.LINE_END;
        adminPanel1.add(screenLbl, g1);
        g1.gridx++;
        g1.anchor = GridBagConstraints.LINE_START;
        adminPanel1.add(screenCb, g1);
        g1.gridx--;
        g1.gridy++;
        g1.anchor = GridBagConstraints.LINE_END;
        adminPanel1.add(timeLbl, g1);
        g1.gridx++;
        g1.anchor = GridBagConstraints.LINE_START;
        g1.fill = GridBagConstraints.HORIZONTAL;
        adminPanel1.add(timeTxt, g1);
        g1.fill = GridBagConstraints.NONE;
        g1.gridx++;
        adminPanel1.add(addBtn, g1);
        g1.gridx++;
        adminPanel1.add(timeCb, g1);
        g1.gridx++;
        adminPanel1.add(subBtn, g1);
        //buttons
        g1.gridy++;
        g1.gridx = 0;
        g1.insets = new Insets(10, 0, 10, 10); //top, right, bottom, left
        g1.anchor = GridBagConstraints.LINE_END;
        adminPanel1.add(clear, g1);
        g1.gridx++;
        g1.anchor = GridBagConstraints.LINE_START;
        g1.gridwidth = 4;
        adminPanel1.add(submit, g1);
        g1.gridwidth = 1;

        //------adding components to panel2-----------------------------------!
        //left
        g2.gridx = 0;
        g2.gridy = 0;
        g2.insets = new Insets(10, 10, 0, 10);
        g2.anchor = GridBagConstraints.LINE_END;
        adminPanel2.add(stanLbl, g2);
        g2.gridy++;
        adminPanel2.add(vipLbl, g2);
        g2.gridy++;
        adminPanel2.add(seatClear, g2);
        //right
        g2.gridy = 0;
        g2.gridx++;
        g2.anchor = GridBagConstraints.LINE_START;
        g2.fill = GridBagConstraints.HORIZONTAL;
        adminPanel2.add(stanTxt, g2);
        g2.fill = GridBagConstraints.NONE;
        g2.gridy++;
        g2.fill = GridBagConstraints.HORIZONTAL;
        adminPanel2.add(vipTxt, g2);
        g2.fill = GridBagConstraints.NONE;
        g2.gridy++;
        adminPanel2.add(seatSubmit, g2);

        //-----adminpanel3-----------------------------------------------------
        //adding components to panel1
        g3.gridx = 1;
        g3.gridy = 0;
        g3.insets = new Insets(10, 0, 0, 10);
        g3.anchor = GridBagConstraints.LINE_START;
        g3.gridwidth = 4;
        adminPanel3.add(showingCb, g3);
        g3.gridwidth = 1;
        g3.gridx--;
        g3.gridy++;
        g3.anchor = GridBagConstraints.LINE_END;
        adminPanel3.add(idLbl1, g3);
        g3.gridx++;
        g3.anchor = GridBagConstraints.LINE_START;
        g3.fill = GridBagConstraints.HORIZONTAL;
        adminPanel3.add(idTxt1, g3);
        g3.fill = GridBagConstraints.NONE;
        g3.gridy++;
        g3.gridx--;
        g3.anchor = GridBagConstraints.LINE_END;
        adminPanel3.add(showLbl1, g3);
        g3.gridx++;
        g3.anchor = GridBagConstraints.LINE_START;
        g3.gridwidth = 5;
        g3.fill = GridBagConstraints.HORIZONTAL;
        adminPanel3.add(showTxt1, g3);
        g3.fill = GridBagConstraints.NONE;
        g3.gridwidth = 1;
        g3.gridy++;
        g3.gridx--;
        g3.anchor = GridBagConstraints.LINE_END;
        adminPanel3.add(descLbl1, g3);
        g3.gridx++;
        g3.anchor = GridBagConstraints.LINE_START;
        g3.gridwidth = 4;
        g3.fill = GridBagConstraints.BOTH;
        g3.weightx = 1;
        g3.weighty = 1;
        adminPanel3.add(descTxtPane1, g3);
        g3.fill = GridBagConstraints.NONE;
        g3.weightx = 0;
        g3.weighty = 0;
        g3.gridwidth = 1;
        g3.gridy++;
        g3.gridx--;
        g3.anchor = GridBagConstraints.LINE_END;
        adminPanel3.add(ageLbl1, g3);
        g3.gridx++;
        g3.anchor = GridBagConstraints.LINE_START;
        adminPanel3.add(ageCb1, g3);
        g3.gridy++;
        g3.gridx--;

        //buttons
        g3.gridy++;
        g3.gridx = 0;
        g3.insets = new Insets(10, 0, 10, 10); //top, right, bottom, left
        g3.anchor = GridBagConstraints.LINE_END;
        adminPanel3.add(clear1, g3);
        g3.gridx++;
        g3.anchor = GridBagConstraints.LINE_START;
        g3.gridwidth = 4;
        adminPanel3.add(submit1, g3);
        g3.gridwidth = 1;

        //adding tabbed pane to frame
        this.add(tabPane);
        this.pack();

        //visibility
        setVisible(true);
        tabPane.setVisible(true);

        //actionlisteners
    }

    public static void main(String[] args) {
        AdminWindow test = new AdminWindow();
    }

    @Override
    public void actionPerformed(ActionEvent e) {

        if (e.getSource() == imgBtn) {

            //--JFileChooser, ugly but better to use--
            String userDir = System.getProperty("user.home");
            JFileChooser chooser = new JFileChooser(userDir + "/Desktop");
            int choice = chooser.showDialog(this, "Choose");
            if (choice != JFileChooser.APPROVE_OPTION) {
                return;
            }

            FileNameExtensionFilter filter = new FileNameExtensionFilter("Image Files", "jpg", "png", "gif", "jpeg");
            chooser.setAcceptAllFileFilterUsed(false);
            chooser.addChoosableFileFilter(filter);
            chosenFile = chooser.getSelectedFile();
            imgName.setText(chosenFile.getName());
            dest = new File(System.getProperty("user.dir") + "/src/iegroup/resources", chosenFile.getName());
            imgString = "resources/" + chosenFile.getName();
            System.out.println(dest.toPath());
        }

        if (e.getSource() == submit) {

            if (e.getSource() == clear) {

            }

            if (e.getSource() == seatSubmit) {

            }
        }
        if (e.getSource() == seatClear) {
            defaultForm();
        }

        if (e.getSource() == addBtn) {

            timeModel.addElement(timeTxt.getText());
            timeList.add(timeTxt.getText());
        }
        if (e.getSource() == subBtn) {
            timeModel.removeElement(timeCb.getSelectedItem());
            timeList.remove(timeCb.getSelectedItem());
        }
    }

    private void defaultForm() {

        stanPriceString = String.format("%.2f", stanPrice);
        vipPriceString = String.format("%.2f", vipPrice);
        stanTxt.setText(stanPriceString);
        vipTxt.setText(vipPriceString);
    }

    public void showValidationPrompt(String message) {
        JFrame validFrame = new JFrame();
        validFrame.setAlwaysOnTop(true);
        JOptionPane.showMessageDialog(validFrame, message, "Invalid input", JOptionPane.CLOSED_OPTION);

    }

    public void showSuccessPrompt(String message) {
        JFrame errorFrame = new JFrame();
        errorFrame.setAlwaysOnTop(true);
        JOptionPane.showMessageDialog(errorFrame, message, "Success", JOptionPane.CLOSED_OPTION);

    }
}

Problem with line number of JTextArea and resize JTextArea texts


Tag : java , By : user147496
Date : March 29 2020, 07:55 AM
it should still fix some issue I don't know what the TextPane class is because that is not a standard JDK component.
If it is a JTextArea, then maybe you can override the getRowHeight(..) method to return the height based on the Font of the main JTextArea.

What is the basic difference between jTextArea.setText() and jTextArea.append() methods?


Tag : java , By : Ben
Date : March 29 2020, 07:55 AM
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