enox10mx
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Hello. I need help with a java application I am making. Every time I run it, I get this error:
Here are my settings:
this is the code for GuiExample.java :
Can you tell me what I am doing wrong? ---thanks.
---------- Post added at 05:40 PM ---------- Previous post was at 05:18 PM ----------
Never mind I fixed it -- since I was opening it in a html file I had to get the class file instead of the jarfile.
Code:
Java Plug-in 1.6.0_31
Using JRE version 1.6.0_31-b05 Java HotSpot(TM) Client VM
User home directory = C:\Users\Ethan
----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------
load: class myfirstjava (2).jar not found.
java.lang.ClassNotFoundException: myfirstjava (2).jar
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception: java.lang.ClassNotFoundException: myfirstjava (2).jar
Code:
Main class:GuiExample applet class:GuiExample
Code:
/* Now the applet will have a GUI
These are elements to interact with the user.
In this example they will not perform any actions.
We will use no Layout manager;
*/
import java.awt.*;
import java.applet.*;
public class GuiExample extends Applet
{
// A Button to click
Button okButton;
// A textField to get text input
TextField nameField;
// A group of radio buttons
// necessary to only allow one radio button to be selected at the same time.
CheckboxGroup radioGroup;
// The radio buttons to be selected
Checkbox radio1;
Checkbox radio2;
// An independant selection box
Checkbox option;
public void init()
{
// Tell the applet not to use a layout manager.
setLayout(null);
// initialze the button and give it a text.
okButton = new Button("A button");
// text and length of the field
nameField = new TextField("A TextField",100);
// initialize the radio buttons group
radioGroup = new CheckboxGroup();
// first radio button. Gives the label text, tells to which
// group it belongs and sets the default state (unselected)
radio1 = new Checkbox("Radio1", radioGroup,false);
// same but selected
radio2 = new Checkbox("Radio2", radioGroup,true);
// Label and state of the checkbox
option = new Checkbox("Option",false);
// now we will specify the positions of the GUI components.
// this is done by specifying the x and y coordinate and
//the width and height.
okButton.setBounds(20,20,100,30);
nameField.setBounds(20,70,100,40);
radio1.setBounds(20,120,100,30);
radio2.setBounds(140,120,100,30);
option.setBounds(20,170,100,30);
// now that all is set we can add these components to the applet
add(okButton);
add(nameField);
add(radio1);
add(radio2);
add(option);
}
}
// Thats's it, you now have given the user visual options.
// However there are no actions related to these comonents.
// You will see that later, first an example of a layoutmanager
// that makes it easier to place components.
// Go to LayoutExample.
---------- Post added at 05:40 PM ---------- Previous post was at 05:18 PM ----------
Never mind I fixed it -- since I was opening it in a html file I had to get the class file instead of the jarfile.