GUI in Java for a C program.

Hi, I have a console program written in C.
Can I make the GUI for this program in Java ?
The user passes on arguments to the C program through the command line using switches. So instead, the java application will now have input boxes etc to take in user input. It will then call the C program passing all the user input to main().
The C Program outputs lots of stuff on stdout. So instead, this output will now be displayed in the text area of the GUI.
Does this make sense ? I need to use Java Swing right ?

Also look at the JNI (Java Native Interface) for allowing interoperability between java and C. I don't know JNI very well (read: "at all"), but there is a forum here on the Sun site that is devoted to nothing but this. You can find it here:
http://forum.java.sun.com/forum.jspa?forumID=52
If you are just calling a c program and letting it run, then CeciNEstPasUnProgrammeur's idea is the way to go. If you are calling c or c++ functions from within a dll, then (I think) JNI is the way to go.
Message was edited by:
petes1234

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Message was edited by:
rigidig

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I need some ideas for a simple program for a project in class. Can anyone help me?

Import Classes
import java.io.*;
public class tictactoe
Define Variables
public static InputStreamReader ISR = new InputStreamReader(System.in);
public static BufferedReader BFR = new BufferedReader(ISR);
public static String BOX[][] = new String[3][3]; //Integer Arry for tictactoe box
public static String PName; //Moving Player's Name
public static String P1Name; //Player 1 Name
public static String P2Name; //Player 2 Name
public static String InputPLY; //X or O
public static String InputStr; //Player's Input
public static boolean BreakLoop; //Set this to true in PlayGame() to exit
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InputPLY = "O";
BreakLoop = false;
ClearBOXCache();
PrintCredits();
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System.out.println("PLEASE ENTER PLAYER 2 NAME");
P2Name = BFR.readLine();
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System.out.print("\nWelcome ");
System.out.print(P1Name);
System.out.print(" and ");
System.out.println(P2Name);
System.out.println("");
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System.out.println(P2Name + " = O");
PlayGame();
PrintCredits();
BFR.readLine();
System.exit(0);
public static void DrawGrid()
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System.out.println("");
System.out.println("\t/-----------------------------\\");
System.out.println("\t|-------- TIC TAC TOE --------|");
System.out.println("\t|-----------------------------|");
System.out.println("\t| | | |");
System.out.println("\t| " + BOX[0][0] + " | " + BOX[0][1] + " | " + BOX[0][2] + " |");
System.out.println("\t| | | |");
System.out.println("\t|-----------------------------|");
System.out.println("\t| | | |");
System.out.println("\t| " + BOX[1][0] + " | " + BOX[1][1] + " | " + BOX[1][2] + " |");
System.out.println("\t| | | |");
System.out.println("\t|-----------------------------|");
System.out.println("\t| | | |");
System.out.println("\t| " + BOX[2][0] + " | " + BOX[2][1] + " | " + BOX[2][2] + " |");
System.out.println("\t| | | |");
System.out.println("\t\\-----------------------------/");
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This function is to print credits. Intended for startup and ending
System.out.println("");
System.out.println("");
System.out.println("\t-------------------------------");
System.out.println("\t--------- TIC TAC TOE ---------");
System.out.println("\t-------------------------------");
System.out.println("");
System.out.println("\t-------------------------------");
System.out.println("\t---- MADE BY WILLIAM CHAN! ----");
System.out.println("\t-------------------------------");
public static void ClearBOXCache()
This function is to clear the BOX's cache.
It is intended for restarting a game
BOX[0][0] = " ";
BOX[0][1] = " ";
BOX[0][2] = " ";
BOX[1][0] = " ";
BOX[1][1] = " ";
BOX[1][2] = " ";
BOX[2][0] = " ";
BOX[2][1] = " ";
BOX[2][2] = " ";
public static void CheckWin(String PLYW) throws IOException
This function is to check if a player wins
for (int X = 0; X < 3; X++)
if (BOX[X][0].equals(PLYW) && BOX[X][1].equals(PLYW) && BOX[X][2].equals(PLYW))
PrintWin(PLYW);
for (int Y = 0; Y < 3; Y++)
if (BOX[0][Y].equals(PLYW) && BOX[1][Y].equals(PLYW) && BOX[2][Y].equals(PLYW))
PrintWin(PLYW);
if (BOX[0][0].equals(PLYW) && BOX[1][1].equals(PLYW) && BOX[2][2].equals(PLYW))
PrintWin(PLYW);
else if (BOX[0][2].equals(PLYW) && BOX[1][1].equals(PLYW) && BOX[2][0].equals(PLYW))
PrintWin(PLYW);
else if (!BOX[0][0].equals(" ") && !BOX[0][1].equals(" ") && !BOX[0][2].equals(" ") && !BOX[1][0].equals(" ") && !BOX[1][1].equals(" ") && !BOX[1][2].equals(" ") && !BOX[2][0].equals(" ") && !BOX[2][1].equals(" ") && !BOX[2][2].equals(" "))
ClearBOXCache();
System.out.println("Tie Game!");
BFR.readLine();
System.out.println("Game has restarted");
public static void PrintWin(String PrintWinner) throws IOException
This function is to print which player won
if (PrintWinner.equals("X"))
System.out.println(P1Name + " wins!");
System.out.println(P2Name + " loses!");
else if (PrintWinner.equals("O"))
System.out.println(P2Name + " wins!");
System.out.println(P1Name + " loses!");
BFR.readLine();
ClearBOXCache();
System.out.println("Game has restarted!");
public static void PrintInstruction(String PLYINSTR)
This function is to give instruction to the player
if (PLYINSTR.equals("X"))
PName = (P1Name);
else if (PLYINSTR.equals("O"))
PName = (P2Name);
System.out.println("");
System.out.println(PName + ":");
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System.out.println("");
System.out.println("TL = TOP LEFT BOX, TM = TOP MIDDLE BOX, TR = TOP RIGHT BOX");
System.out.println("ML = MIDDLE LEFT BOX, MM = MIDDLE MIDDLE BOX, MR = MIDDLE RIGHT BOX");
System.out.println("BL = BOTTOM LEFT BOX, BM = BOTTOM MIDDLE BOX, BR = BOTTOM RIGHT BOX");
public static void PlayGame() throws IOException
This function is the main game function.
It calls other game functions.
Define Variables
while(true)
if (InputPLY.equals("O"))
InputPLY = "X";
else if (InputPLY.equals("X"))
InputPLY = "O";
while(true)
PrintInstruction(InputPLY);
InputStr = BFR.readLine(); //Player's move
Check player's move
if (InputStr.equals("TL"))
if (BOX[0][0].equals(" "))
BOX[0][0] = InputPLY;
break;
else if (InputStr.equals("TM"))
if (BOX[0][1].equals(" "))
BOX[0][1] = InputPLY;
break;
else if (InputStr.equals("TR"))
if (BOX[0][2].equals(" "))
BOX[0][2] = InputPLY;
break;
else if (InputStr.equals("ML"))
if (BOX[1][0].equals(" "))
BOX[1][0] = InputPLY;
break;
else if (InputStr.equals("MM"))
if (BOX[1][1].equals(" "))
BOX[1][1] = InputPLY;
break;
else if (InputStr.equals("MR"))
if (BOX[1][2].equals(" "))
BOX[1][2] = InputPLY;
break;
else if (InputStr.equals("BL"))
if (BOX[2][0].equals(" "))
BOX[2][0] = InputPLY;
break;
else if (InputStr.equals("BM"))
if (BOX[2][1].equals(" "))
BOX[2][1] = InputPLY;
break;
else if (InputStr.equals("BR"))
if (BOX[2][2].equals(" "))
BOX[2][2] = InputPLY;
break;
else if (InputStr.equals("RESTART"))
ClearBOXCache();
System.out.println("");
System.out.println("GAME RESTARTED!");
System.out.println("");
break;
else if (InputStr.equals("QUIT"))
BreakLoop = true;
break;
if (BreakLoop == true)
break;
DrawGrid();
CheckWin(InputPLY);
}

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http://landonf.bikemonkey.org/static/soylatte/
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Mac OS X 10.6 Snow Leopard
http://store.apple.com/us/product/MACOS_XSNGL
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Thanks for the suggestion.
Please bear in mind that this issue, presumably introduced by Apple's own update, affects not only the command line java interpreter but any other app that depends on Java (including some GUI apps). So it perhaps fits the larger scope of Leopard instead of the Unix area.
Message was edited by: bhapca

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Powerbook G4 1.5Ghz Mac OS X (10.4.2)
Powerbook G4 1.5Ghz Mac OS X (10.4.2)

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