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Look at the Desktop and Runtime classes. You can call OS commands with methods in those classes.

Please edit your post and wrap your code in code tags for better displaying.

For each method you need to have code that writes some * on a line.
The method for the filled one writes the same number on each line.
The method for the outline only writes a full line of * for...

Have you looked in the Response Header?

Try calling repaint() after you change the GUI's contents.

how to go about linking these two
Define some methods in the class that has the data that the GUI class can call to do what it needs to do. The GUI class would need a reference to the class with...

java.lang.NullPointerException
at Test.rightPlace(Test.java:30)

You have seen this type of error before. YOU should know by now how to solve it. see post#15

Look at line 30 and see...

Read into a variable:
String theLine = br.readLine();

What variable is null on line 28? Backtrack in your code to find out why that variable does not have a valid value.

For example this code assumes that the world is perfect:
...

An if statement can test the current values of variables. Keeping track of values would require an assignment statement.

This code compiles with no errors:


public class InheritanceTest {
class Player {}
class client extends Player implements Runnable {
//code here
public void run(){}
}
...

You need to post all of the code for all of the classes. Your edited,shortened code samples are useless.

There are a lot of calls to the println method.
Are you saying that none of them are executing? Nothing is printed on the screen???

You need to add some more println statements to show where...

What does the program output now?

Please edit your post and wrap the code in code tags: [/code] at the end and [code] at the start

Also The .java extension in the code= tag looks wrong.

Have you read the API doc for the JComponent class to see what methods could be useful?
Are there any that deal with the layout manager or the location and size of the component?

But is that where the program is looking for it?
Create a File object for the file and print its absolutePath to see where the program is looking for the file.

Your code looks like it should be able to read an existing file.
You need to be sure the file is where the program is looking for it to be.

If you don't want to use one of the layout managers, Remove the layout manager and use one or more of the JComponent methods to set the components position.

You need to have the standard main method in any class you try to start by using the java command:

java ThisClassMustHaveMainMethod

How are you "calling" a class? Do you mean you are trying to create an instance of the class?
Or to call a method in a class?

Some terminology. I think what you mean by a command is called a method call.
The expression: Keyboard.readInt()
is a call to the static readInt() method for the class Keyboard. I say static...

Try this to see if you know what the absolute path is:
File file = new File("<Put absolute path here>minilogo.png");
then test if it exists

file.getAbsolutePath() is C:\resources\logo.png
Is that where the file is: C:\resources\
That is where the JVM is looking for it.

What do you mean by "open" for a file? Do you want the OS to select a program(or do it yourself), start that program executing and have that program read the file and display it?

Look at the...