Thread: What does this mean????

java.lang.NoSuchMethodError: main
Exception in thread "main"
Process completed.


(I made a main method)

package GUI;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class Testing extends JPanel implements MouseListener{

private JTextField textField;
private JButton button;

public Testing(){
super.setLayout(new BorderLayout());

this.build();
}

public void build(){
JPanel center = new JPanel(new FlowLayout(FlowLayout.CENTER));
super.add(center, BorderLayout.CENTER);

textField = new JTextField();
center.add(textField);

this.button = new JButton("On-Screen Keyboard");
button.setSize(new Dimension(200, 20));
center.add(button);
button.addMouseListener(this);
}

public void mouseClicked(MouseEvent e)
{
if (e.getSource() == button)
{
CharacterPadSpace b = new CharacterPadSpace(textField);
}
}
public void mouseEntered(MouseEvent e)
{
// if (e.getSource() == a){ System.out.println("Test1");}
}
public void mouseExited(MouseEvent e)
{
//if (e.getSource() == a){ System.out.println("Test1");}
}
public void mousePressed(MouseEvent e)
{
//if (e.getSource() == a){ System.out.println("Test1");}
}
public void mouseReleased(MouseEvent e)
{
//i/f (e.getSource() == a){ System.out.println("Test1");}
}

public static void main (String [] args)
{
JFrame f = new JFrame();
f.setLocation(50, 50);
f.setSize(470, 500);
f.setVisible(true);
Testing m = new Testing();
f.add(m);
}
}


/**
* @(#)CharacterPadSpace.java
*
*
* @Jamie
* @version 1.00 2012/6/3
*/
package GUI;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class CharacterPadSpace extends JFrame implements MouseListener
{
private JButton a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, space, bspace, capsLock;
private JTextField myTextField;
private JButton zero, one, two, three, four, five, six, seven, eight, nine;
private boolean capsPressed = false;

public CharacterPadSpace(JTextField myTextField)
{
super.setLayout(new BorderLayout());
this.myTextField = new JTextField("");
super.setPreferredSize(new Dimension(200,500));
this.myTextField = myTextField;
super.setLocation(50, 50);
super.setSize(470, 500);
super.setVisible(true);
this.build();
}

public void build()
{
JPanel north = new JPanel(new FlowLayout(FlowLayout.CENTER));
super.add(north, BorderLayout.NORTH);
north.setBorder(BorderFactory.createEmptyBorder(20 , 0, 0, 0));

JPanel center = new JPanel(new GridBagLayout());
super.add(center, BorderLayout.CENTER);
center.setBackground(new Color(255, 255, 240));

JPanel south = new JPanel();
super.add(south, BorderLayout.SOUTH);
south.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 0));

JPanel east = new JPanel();
super.add(east, BorderLayout.EAST);
east.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 0));

JPanel west = new JPanel();
super.add(west, BorderLayout.WEST);
west.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 0));

GridBagConstraints cc = new GridBagConstraints();
a = new JButton("a");
a.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc.ipadx = 20;
cc.ipady = 20;
cc.insets = new Insets(0,3,0,3);
cc.gridx = 0;
cc.gridy = 0;
center.add(a, cc);

b = new JButton("b");
b.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc.weightx = 0.5;
cc.insets = new Insets(0,0,0,3);
cc.gridx = 1;
cc.gridy = 0;
center.add(b, cc);

c = new JButton("c");
c.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc.insets = new Insets(0,0,0,3);
cc.weightx = 0.5;
cc.gridx = 2;
cc.gridy = 0;
center.add(c, cc);

d = new JButton("d");
d.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc.weightx = 0.5;
cc.insets = new Insets(0,0,0,3);
cc.gridx = 3;
cc.gridy = 0;
center.add(d, cc);

e = new JButton("e");
e.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc.weightx = 0.5;
cc.insets = new Insets(0,0,0,3);
cc.gridx = 4;
cc.gridy = 0;
center.add(e, cc);

bspace = new JButton("<----");
bspace.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc.weightx = 0.5;
cc.gridwidth = 2;
cc.insets = new Insets(0,3,0,3);
cc.fill = GridBagConstraints.HORIZONTAL;
cc.gridx = 5;
cc.gridy = 0;
center.add(bspace, cc);

GridBagConstraints cc2 = new GridBagConstraints();

cc2.ipadx = 20;
cc2.ipady = 20;


f = new JButton("f");
f.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,3,0,0);
cc2.gridx = 0;
cc2.gridy = 1;
center.add(f, cc2);

g = new JButton("g");
g.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 1;
cc2.gridy = 1;
center.add(g, cc2);

h = new JButton("h");
h.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 2;
cc2.gridy = 1;
center.add(h, cc2);

i = new JButton("i");
i.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 3;
cc2.gridy = 1;
center.add(i, cc2);

j = new JButton("j");
j.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 4;
cc2.gridy = 1;
center.add(j, cc2);

k = new JButton("k");
k.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 5;
cc2.gridy = 1;
center.add(k, cc2);

l = new JButton("l");
l.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 6;
cc2.gridy = 1;
center.add(l, cc2);

m = new JButton("m");
m.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 1;
cc2.insets = new Insets(4,3,0,3);
cc2.gridx = 0;
cc2.gridy = 2;
center.add(m, cc2);

n = new JButton("n");
n.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 1;
cc2.gridy = 2;
center.add(n, cc2);

o = new JButton("o");
o.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 2;
cc2.gridy = 2;
center.add(o, cc2);

p = new JButton("p");
p.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 3;
cc2.gridy = 2;
center.add(p, cc2);

q = new JButton("q");
q.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 4;
cc2.gridy = 2;
center.add(q, cc2);

r = new JButton("r");
r.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 5;
cc2.gridy = 2;
center.add(r, cc2);

s = new JButton("s");
s.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 6;
cc2.gridy = 2;
center.add(s, cc2);

t = new JButton("t");
t.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,3,0,3);
cc2.gridx = 0;
cc2.gridy = 3;
center.add(t, cc2);

u = new JButton("u");
u.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 1;
cc2.gridy = 3;
center.add(u, cc2);

v = new JButton("v");
v.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 2;
cc2.gridy = 3;
center.add(v, cc2);

w = new JButton("w");
w.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 3;
cc2.gridy = 3;
center.add(w, cc2);

x = new JButton("x");
x.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 4;
cc2.gridy = 3;
center.add(x, cc2);

y = new JButton("y");
y.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 5;
cc2.gridy = 3;
center.add(y, cc2);

z = new JButton("z");
z.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 6;
cc2.gridy = 3;
center.add(z, cc2);

capsLock = new JButton("caps lock");
capsLock.setFont(new Font("Lucida Sans Regular", Font.ITALIC, 18));
cc2.gridwidth = 2;
cc2.gridheight = 2;
cc2.weightx = 0.5;
cc2.insets = new Insets(4,3,0,3);
cc2.gridx = 0;
cc2.gridy = 4;
cc2.ipadx = 40;
cc2.ipady = 81;
center.add(capsLock, cc2);

zero = new JButton("0");
zero.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.gridwidth = 1;
cc2.gridheight = 1;
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 2;
cc2.gridy = 4;
cc2.ipadx = 20;
cc2.ipady = 20;
center.add(zero, cc2);

one = new JButton("1");
one.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 3;
cc2.gridy = 4;
center.add(one, cc2);

two = new JButton("2");
two.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 4;
cc2.gridy = 4;
center.add(two, cc2);

three = new JButton("3");
three.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 5;
cc2.gridy = 4;
center.add(three, cc2);

four = new JButton("4");
four.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 6;
cc2.gridy = 4;
center.add(four, cc2);

five = new JButton("5");
five.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 2;
cc2.gridy = 5;
center.add(five, cc2);

six = new JButton("6");
six.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 3;
cc2.gridy = 5;
center.add(six, cc2);

seven = new JButton("7");
seven.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 4;
cc2.gridy = 5;
center.add(seven, cc2);

eight = new JButton("8");
eight.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 5;
cc2.gridy = 5;
center.add(eight, cc2);

nine = new JButton("9");
nine.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,3);
cc2.gridx = 6;
cc2.gridy = 5;
center.add(nine, cc2);

space = new JButton(" ");
space.setFont(new Font("Lucida Sans Regular", Font.PLAIN, 20));
cc2.weightx = 0.5;
cc2.insets = new Insets(4,0,0,0);
cc2.gridwidth = 5;
cc2.gridheight = 1;
cc2.ipadx = 222;
cc2.ipady = 20;
cc2.gridx = 1;
cc2.gridy = 6;
center.add(space, cc2);


zero.addMouseListener(this);one.addMouseListener(t his);two.addMouseListener(this);
three.addMouseListener(this);four.addMouseListener (this);five.addMouseListener(this);
six.addMouseListener(this);seven.addMouseListener( this);eight.addMouseListener(this);
nine.addMouseListener(this);capsLock.addMouseListe ner(this);


a.addMouseListener(this);b.addMouseListener(this); c.addMouseListener(this);d.addMouseListener(this);
e.addMouseListener(this);f.addMouseListener(this); g.addMouseListener(this);h.addMouseListener(this);
i.addMouseListener(this);j.addMouseListener(this); k.addMouseListener(this);l.addMouseListener(this);
m.addMouseListener(this);n.addMouseListener(this); o.addMouseListener(this);p.addMouseListener(this);
q.addMouseListener(this);r.addMouseListener(this); s.addMouseListener(this);t.addMouseListener(this);
u.addMouseListener(this);v.addMouseListener(this); w.addMouseListener(this);x.addMouseListener(this);
bspace.addMouseListener(this);space.addMouseListen er(this);z.addMouseListener(this);y.addMouseListen er(this);
}

public void mouseClicked(MouseEvent e)
{
if (e.getSource() == capsLock)
{
capsPressed = true;
}
else if (e.getSource() == a)
{
if (capsPressed){
myTextField.setText( myTextField.getText() + "A");
capsPressed = false;
}else if(capsPressed == false)
{
myTextField.setText( myTextField.getText() + "a");
capsPressed = false;
}
}
}
public void mouseEntered(MouseEvent e)
{
// if (e.getSource() == a){ System.out.println("Test1");}
}
public void mouseExited(MouseEvent e)
{
//if (e.getSource() == a){ System.out.println("Test1");}
}
public void mousePressed(MouseEvent e)
{
//if (e.getSource() == a){ System.out.println("Test1");}
}
public void mouseReleased(MouseEvent e)
{
//i/f (e.getSource() == a){ System.out.println("Test1");}
}

/* public static void main(String [] args)
{
JFrame f = new JFrame();
f.add(new CharacterPadSpace(new JTextField()));

f.setLocation(50, 50);
f.setSize(470, 500);
f.setVisible(true);

}*/
}

I am trying to run the first clsss ... Thanks

The CharacterPadSpace works silky smooth and when compiling everything seems ok

The CharacterPadSpace works silky smooth and when compiling everything seems ok

What is SSCCE cause I am trying to click on what you sent me that hyperlink marked in blue and nothing is loaded

I am trying to run the Testing class ... but there is nothing when it comes to compiling its a run time error and the problem I think is the Testing class because the other works smooth