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Eksempelkode fra java

 

 

package test;

/*
* TableDemo.java requires no other files.
*/

import javax.swing.*;
import javax.swing.ListSelectionModel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import java.awt.Dimension;
import java.awt.GridLayout;

/** 
* TableDemo is just like SimpleTableDemo, except that it
* uses a custom TableModel.
*/
public class TableDemo extends JPanel {
private boolean DEBUG = false;

public TableDemo() {
	super(new GridLayout(1,0));

	JTable table = new JTable(new MyTableModel());
	table.setPreferredScrollableViewportSize(new Dimension(500, 70));
	table.setFillsViewportHeight(true);
	table.setCellSelectionEnabled(true);

	//Create the scroll pane and add the table to it.
	JScrollPane scrollPane = new JScrollPane(table);

	//Add the scroll pane to this panel.
	add(scrollPane);
}

class MyTableModel extends AbstractTableModel {
	private String[] columnNames = {"First Name",
									"Last Name",
									"Sport",
									"# of Years",
									"Vegetarian"};
	private Object[][] data = {
		{"Mary", "Campione",
		 "Snowboarding", new Integer(5), new Boolean(false)},
		{"Alison", "Huml",
		 "Rowing", new Integer(3), new Boolean(true)},
		{"Kathy", "Walrath",
		 "Knitting", new Integer(2), new Boolean(false)},
		{"Sharon", "Zakhour",
		 "Speed reading", new Integer(20), new Boolean(true)},
		{"Philip", "Milne",
		 "Pool", new Integer(10), new Boolean(false)},
	};

	public int getColumnCount() {
		return columnNames.length;
	}

	public int getRowCount() {
		return data.length;
	}

	public String getColumnName(int col) {
		return columnNames[col];
	}

	public Object getValueAt(int row, int col) {
		return data[row][col];
	}

	/*
	 * JTable uses this method to determine the default renderer/
	 * editor for each cell.  If we didn't implement this method,
	 * then the last column would contain text ("true"/"false"),
	 * rather than a check box.
	 */
	public Class getColumnClass(int c) {
		return getValueAt(0, c).getClass();
	}

	/*
	 * Don't need to implement this method unless your table's
	 * editable.
	 */
	public boolean isCellEditable(int row, int col) {
		//Note that the data/cell address is constant,
		//no matter where the cell appears onscreen.
		if (col < 2) {
			return false;
		} else {
			return true;
		}
	}

	/*
	 * Don't need to implement this method unless your table's
	 * data can change.
	 */
	public void setValueAt(Object value, int row, int col) {
		if (DEBUG) {
			System.out.println("Setting value at " + row + "," + col
							   + " to " + value
							   + " (an instance of "
							   + value.getClass() + ")");
		}

		data[row][col] = value;
		fireTableCellUpdated(row, col);

		if (DEBUG) {
			System.out.println("New value of data:");
			printDebugData();
		}
	}

	private void printDebugData() {
		int numRows = getRowCount();
		int numCols = getColumnCount();

		for (int i=0; i < numRows; i++) {
			System.out.print("	row " + i + ":");
			for (int j=0; j < numCols; j++) {
				System.out.print("  " + data[i][j]);
			}
			System.out.println();
		}
		System.out.println("--------------------------");
	}
}

/**
 * Create the GUI and show it.  For thread safety,
 * this method should be invoked from the
 * event-dispatching thread.
 */
private static void createAndShowGUI() {
	//Create and set up the window.
	JFrame frame = new JFrame("TableDemo");
	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

	//Create and set up the content pane.
	TableDemo newContentPane = new TableDemo();
	newContentPane.setOpaque(true); //content panes must be opaque
	frame.setContentPane(newContentPane);

	//Display the window.
	frame.pack();
	frame.setVisible(true);
}

public static void main(String[] args) {
	//Schedule a job for the event-dispatching thread:
	//creating and showing this application's GUI.
	javax.swing.SwingUtilities.invokeLater(new Runnable() {
		public void run() {
			createAndShowGUI();
		}
	});
}
}

 

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