I am creating a JTable in Netbeans and am having three minor issues with the structure.
- I can't seem to align my table in the direction I want (Say North, East, South, or West) and now it's annoyingly hovering over my JButton.
- The code I wrote to set the dimensions of the JTable do nothing if I change the variables.
- The code I wrote to add a JScrollPane is not showing up when I run it.
I understand if you can't solve all three but I figured I'd put them all in one instead of three different questions so any help with a problem is appreciated!
**Also as a note, ignore everything after the ActionListener. I am eventually going to make the code read a text file and sort that data in an ArrayList. Then somehow into the table instead of how I manually set it up in this example.
Here is my code (problem areas are labeled in comments in bold, capitalized font):
Main:
package libraryinventory;
import javax.swing.JFrame;
import java.io.*;
public class MainClass {
static String[] bookArray;
public static void main(String[] args) {
GUICommandFunctions guiDemo = new GUICommandFunctions();
//What to do when window closes
guiDemo.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// size of window in pixels
guiDemo.setSize(1000, 720);
//make window visible
guiDemo.setVisible(true);
}
}
GUI Class:
package libraryinventory;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.io.*;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.Box;
import static javax.swing.Box.createHorizontalBox;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.SwingConstants;
public class GUICommandFunctions extends JFrame {
private JButton ButtonOne;
private JTable jt;
public GUICommandFunctions() {
this.setTitle("Library Inventory"); //Name of window
JPanel panel = new JPanel();
this.add(panel, BorderLayout.CENTER); //Location of panel for JButton
ButtonOne = LibraryContentButton();
panel.add(ButtonOne); //adding panel to JFrame
String[] columns = {"Title", "Author/Language", "Publisher", "Page Count", "Version Number/Genre/Topic", "Part of a series/Illustrator"}; //columns of the JTable
String[][] data = {{"The Keto Cookbook", "Chronicle Books", "304", "English", "Keto Cooking", "null"}, //data under the columns
{"The Hitchhiker's Guide to the Galaxy", "Del Rey", "224", "Douglas Adams", "Fantasy", "Y"}
};
jt = new JTable(data, columns){ //Makes it so can't edit data inside table once ran
public boolean isCellEditable(int data, int columns) {
return false;
}
};
jt.setPreferredScrollableViewportSize(new Dimension(450, 63)); //Set size. **HERE IS PROBLEM #2**
jt.setFillsViewportHeight(true); //Set visible
jt.setVerticalAlignment(JTable.BOTTOM_ALIGNMENT); //**HERE IS PROBLEM #1**
JScrollPane jps = new JScrollPane(jt); //add scroll **HERE IS PROBLEM #3**
add(jps);
}
private JButton LibraryContentButton() { //
JButton content = new JButton("Click to view all content");
content.setFocusable(false);
content.setBackground(Color.DARK_GRAY);
content.setForeground(Color.WHITE);
content.setFont(new Font("Arial", Font.BOLD, 20));
content.setToolTipText("Shows content of the entire library in a neatly ordered JTable");
content.setMargin(new Insets(10, 10, 10, 10));
content.setPreferredSize(new Dimension(300, 75));
content.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(rootPane, "Eventually will make this button load up the JTable");
}
});
return content;
}
static {
int arrayCount;
FileReader fr = null;
try {
fr = new FileReader("C:\\Users\\Mark Case\\Documents\\NetBeansProjects\\LibraryInventory\\src\\libraryinventory\\library.txt"); //Reads in text file
} catch (FileNotFoundException ex) {
Logger.getLogger(GUICommandFunctions.class.getName()).log(Level.SEVERE, null, ex);
}
BufferedReader reader = new BufferedReader(fr);
ArrayList<String> str = new ArrayList<>();
String line = "";
arrayCount = 0;
try {
while((line=reader.readLine())!=null) {
str.add(line);
arrayCount = arrayCount + 1;
}
} catch (IOException ex) {
Logger.getLogger(GUICommandFunctions.class.getName()).log(Level.SEVERE, null, ex);
}
// Here we would actually set the type to what the user wants (note: Set it to a "0" if the user wants all Books)
String selType = "2";
// Call method to select Books by category type
String methodResult = SelectType(str, arrayCount, selType);
}
private static String SelectType (ArrayList<String> str, int arrayCount, String selType) {
for (int i = 1; i < arrayCount; i++) {
String buffer = str.get(i);
String bookCat = buffer.substring(0,1);
// Print books by Category - "0" type means print all Books
if (selType.equals(bookCat)) {
System.out.println(buffer);
}
else if (selType.equals("0")) {
System.out.println(buffer);
}
}
return "0";
}
}
