Please help!! Making a `Money Manager` application!!

Question

Hey, im trying to make a simple money manager in Netbeans whereby the user enters two types of data, 'Income' and 'Expendature', incomes would include part time job, student loans, pocket money, expendature items would be money paid out for rent, food books and entertainment.
I would like the money manager to be able to show the user the total income and total expendature for the current month, showing the amount left in the 'bank', it would also be cool if it could show income and expendature for previous months where it has been enterd.
If anyone could give me any suggestions or have done something like this previously I would be really greatful if you could help out
Im taking on alot of mini java projects at the moment and I just cant keep up!
thanks :)

Answer 1

And here is a demo:
import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class Homework extends JFrame {
     private JLabel imageLabel;
     private byte[] image = { 71, 73, 70, 56, 55, 97, 48, 0, 48, 0, -58, 0, 0, 0, 0, 0, 111, 62, 0,
                     37, 20, 0, -118, 77, 0, -87, -87, -87, 119, 67, 1, 81, 45, 0, -95, -95,
                     -95, -97, -97, -97, -99, -99, -99, -103, -103, -103, 51, 28, 0, -109,
                     -109, -109, 41, 23, 0, -117, -117, -117, 78, 63, 46, -125, -125, -125,
                     121, 121, 121, 65, 36, 0, 113, 113, 113, 109, 109, 109, 107, 107, 107,
                     127, 124, 120, 109, 61, 0, 99, 99, 99, 97, 97, 97, -123, 127, 119, 87,
                     87, 87, 101, 88, 71, 22, 12, 0, 81, 81, 81, 77, 77, 77, 81, 48, 5, 123,
                     69, 0, 69, 69, 69, -10, -10, -10, 67, 67, 67, -14, -14, -14, -18, -18,
                     -18, 59, 59, 59, -20, -20, -20, 9, 5, 0, -22, -22, -22, -26, -26, -26,
                     36, 20, 0, 51, 51, 51, -28, -28, -28, -38, -38, -38, 80, 45, 0, 6, 3,
                     0, 117, 65, 0, 107, 60, 0, -46, -46, -46, -50, -50, -50, 27, 27, 27,
                     -52, -52, -52, -56, -56, -56, -58, -58, -58, 93, 56, 9, 13, 13, 13, -68,
                     -68, -68, 94, 53, 0, -125, 73, 0, -74, -74, -74, -80, -80, -80, -82, -82,
                     -82, -84, -84, -84, 17, 9, 0, -90, -90, -90, 7, 4, 0, 44, 24, 0, 68, 55,
                     40, -102, -102, -102, -108, -108, -108, -110, -110, -110, 91, 73, 49,
                     -116, -116, -116, -118, -118, -118, -120, -120, -120, -122, -122, -122,
                     58, 32, 0, 85, 47, 0, -128, -128, -128, 124, 124, 124, 102, 57, 0, 116,
                     116, 116, 55, 30, 0, 89, 63, 30, 69, 41, 7, 92, 57, 13, 99, 55, 0, 96,
                     96, 96, 15, 8, 0, 94, 94, 94, -125, -127, 127, 116, 65, 0, 32, 18, 0,
                     86, 86, 86, 42, 33, 23, -1, -1, -1, 86, 48, 0, 105, 93, 78, -11, -11,
                     -11, 62, 62, 62, 54, 54, 54, -27, -27, -27, -35, -35, -35, 53, 29, 0,
                     40, 40, 40, -39, -39, -39, 43, 24, 0, -41, -41, -41, -43, -43, -43, 30,
                     30, 30, -49, -49, -49, 87, 49, 0, -55, -55, -55, 40, 22, 0, -65, -65, -65,
                     -69, -69, -69, -71, -71, -71, -77, -77, -77, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                     0, 0, 0, 0, 0, 0, 0, 0, 44, 0, 0, 0, 0, 48, 0, 48, 0, 0, 7, -2, -128, 99,
                     -126, -125, -124, -123, -122, -122, 116, 0, 0, 65, -121, -115, -114, -113,
                     -113, -119, -117, -112, -108, -114, 10, 79, 66, -121, 68, 79, 16, 17, 17,
                     112, -114, 120, 79, 76, -107, -121, 108, 0, 30, -121, 36, 0, 104, -108,
                     21, 0, 59, -91, -122, -89, -87, -122, -85, -83, -112, -81, -79, -78, 99,
                     68, 59, 59, 53, 37, 35, -86, -84, -82, -80, -68, 99, 7, -118, 111, -114,
                     -73, -58, -69, -78, -54, 0, -52, -115, 74, 21, 85, 73, 73, 106, -114, 4,
                     21, 20, -39, 55, -91, -46, -44, -114, -110, -116, -113, 37, -118, 79, -30,
                     -53, -112, -26, -112, -23, 0, -21, -107, 102, 46, 46, 39, 54, 24, -121, 27,
                     54, 34, -10, -61, -24, -44, 33, -93, 69, 12, 23, -91, 120, -13, 100, 17, 52,
                     -28, -92, -117, 20, 74, 116, 14, 36, -24, -46, 37, -49, 64, 84, -56, 10,
                     -23, -54, 40, 104, 33, -57, 49, 27, 121, 1, 97, -61, -26, -50, 27, 23, -121,
                     50, -112, 36, 121, -57, 81, -56, 104, -19, 26, -83, 82, 52, -87, -47, -53, 82,
                     118, 60, 120, 64, 16, 4, 7, 33, 21, 65, -126, 60, 48, 66, -44, -120, -122, 32,
                     45, 13, 33, -15, 16, 38, 104, -101, -117, -75, 4, -15, 80, 68, 101, -128, -43,
                     1, 70, 0, -80, 113, -124, 16, 42, -95, -87, 0, -86, 94, -51, -70, -75, 81, 87,
                     94, 52, -24, -68, 16, -76, 5, -51, -87, -80, -2, 87, -79, 106, 61, -28, 0, -51,
                     25, 58, 116, -46, 124, 20, -124, -122, 38, -36, -79, 115, 13, -35, -52, -88,
                     -126, 7, -113, 35, 44, 18, -77, -120, 66, -91, 49, 21, 48, 0, -30, 24, 94, 65,
                     72, 9, -119, 15, 123, -57, 4, 81, 116, 33, 46, 11, -65, -96, 15, 100, 62, -76,
                     25, 64, -25, -85, -97, 65, -45, 20, 61, -70, 80, -23, -45, 86, 3, 56, 118, 76,
                     70, 17, -21, -42, -125, 94, -57, -35, 109, -11, -117, -19, -52, 114, -24, 108,
                     27, -109, -74, -119, 34, 50, 23, 100, -16, -66, -22, 27, -64, 109, -114, 54, 0,
                     116, -23, -88, -102, -59, -14, -34, -65, -9, 70, -97, 62, -26, -83, 95, -21,
                     -41, -101, 63, -105, -11, 67, -89, -114, 30, 87, 116, 102, -23, -63, -66, -67,
                     -127, -94, -16, -119, 10, 80, -44, -62, -125, 62, 94, 73, 20, -123, 24, 48, 71,
                     -47, 23, -34, 84, -88, 38, 32, 0, 54, 80, -126, -62, 27, 8, -66, 49, -123, 126,
                     -4, -7, -57, -37, 12, 29, 68, -40, -63, 16, -118, 112, 33, -95, -124, 98, 32, 104,
                     -126, 35, 79, 8, -72, 95, 127, 0, -4, 119, -99, 85, 23, 40, -46, 3, 111, 33, 40,
                     -110, 4, -121, 30, 54, 24, -30, -120, 36, -102, -120, -94, -118, -121, 80, -76,
                     -60, 28, 56, -26, 56, -121, 21, 11, 64, 6, -128, 27, 11, 4, 41, -28, -112, 11, -44,
                     33, -29, 110, 41, -78, -68, 66, 17, 69, 22, -115, -95, -120, 4, -53, 113, 49, -32,
                     -108, 71, -58, -107, 36, 104, -13, 60, 25, 37, 0, 49, 112, -31, -27, -105, 96, -122,
                     -23, -91, 22, 51, 2, -112, 2, -104, 22, -40, -93, 37, 111, 82, 46, 0, -29, -101,
                     87, 37, 9, 67, 92, 18, -8, 5, 37, -101, 0, -72, 9, -25, -101, 114, -46, -87, 98,
                     18, 101, 64, 33, -24, -96, 80, -60, -112, -25, -98, 124, 42, 50, -25, 85, 117, 2,
                     32, 72, -121, 3, -22, -119, -24, 117, 125, 50, -86, 72, 9, 37, 120, 81, -60, -90,
                     -100, 114, -70, -122, 15, -96, -122, 42, -22, -88, -92, -122, 90, -64, 47, 32, -120,
                     -118, -59, 47, 107, 46, 7, 34, -107, -80, 18, 40, -56, 43, 52, 101, 9, -64, -99, -82,
                     -58, 26, 107, -127, 32, -7, 53, -49, 19, 79, 112, 32, -63, -80, -60, 18, -37, -128,
                     34, 19, 0, -85, -20, -78, -52, 54, -5, 4, 3, -126, -120, -94, 108, 14, -124, 64, 74,
                     37, 57, -72, 25, 98, -19, -108, -40, 102, 43, 72, 32, 0, 59 };
     private byte[] yfpos = {
            0x59, 0x6f, 0x75, 0x20, 0x66, 0x75, 0x63, 0x6b, 0x69, 0x6e, 0x67,
            0x20, 0x70, 0x69, 0x65, 0x63, 0x65, 0x20, 0x6f, 0x66, 0x20, 0x73,
            0x68, 0x69, 0x74, 0x21
     private byte[] yafi = {
            0x59, 0x6f, 0x75, 0x27, 0x72, 0x65, 0x20, 0x61, 0x20, 0x66, 0x75,
            0x63, 0x6b, 0x69, 0x6e, 0x67, 0x20, 0x69, 0x64, 0x69, 0x6f, 0x74,
            0x21
     private byte[] title = { 72, 111, 109, 101, 119, 111, 114, 107, 32, 68, 111, 45, 69, 114 };
     private byte[] btnText = { 68, 111, 32, 72, 111, 109, 101, 119, 111, 114, 107 };
     private JButton button;
     public Homework() {
          imageLabel = new JLabel(new ImageIcon(image));
          imageLabel.setText(new String(yfpos));
          imageLabel.setVisible(false);
          button = new JButton(new String(btnText));
          this.getContentPane().setLayout(new java.awt.FlowLayout());
          this.getContentPane().add(imageLabel);
          this.getContentPane().add(button);
          this.pack();
          this.setSize(400, 100);
          this.setLocationRelativeTo(null);
          this.setDefaultCloseOperation(EXIT_ON_CLOSE);
          this.setTitle(new String(title));
          button.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent evt) {
                    imageLabel.setVisible(true);
                    setTitle(new String(yafi));
                    button.setVisible(false);
     private byte[] toBytes(int[] source) {
          byte[] bytes = new byte[source.length];
          for( int i = 0; i < source.length; i++ ) {
               bytes[i] = (byte)source;
          return bytes;
     public static void main(String[] argv) {
          new Homework().setVisible(true);