WhiteBoard.Invoke Class Reference

Static Public Member Functions
static void	javaVM (char c, String args)
	Invoke java on the given class in a separate process. More...
static Remote	lookup (String url)
static void	main (String[] args)
static String	makeURL (char c, String id)
static void	myPrint (String who, String what)
static String	promptAndGet (String msg)
static void	setJavaCmdPath (String s)

Static Public Attributes
static int	verbosity = 1

Static Private Attributes
static final String	classNames [] = {serverClass, clientClass,linesClass}
static final String	clientClass = "WhiteBoard.WbClientImpl"
static String	javaCmd = "java"
	The following Srings isolate path related issues. More...
static final String	linesClass = "WhiteBoard.LinesFrameImpl"
static int	pid = 0
static final String	rmiRegistryPfx = "//localhost/"
static final String	serverClass = "WhiteBoard.WbServerImpl"
static BufferedReader	stdIn

Detailed Description

Definition at line 8 of file Invoke.java.

Member Function Documentation

static void WhiteBoard.Invoke.javaVM ( char  c, String  args  )

static

Invoke java on the given class in a separate process.

Also, take care of any exceptions.

Definition at line 54 of file Invoke.java.

References WhiteBoard.Invoke.classNames, WhiteBoard.Invoke.javaCmd, WhiteBoard.Invoke.myPrint(), and WhiteBoard.Invoke.pid.

                                                   {
    pid ++;
    String classNm = classNames[c == 'S'? 0 : c == 'C' ? 1 : 2];
    String cmd = javaCmd + " " +  classNm + " " + pid + " " +  args;
    
    try {
        Runtime r = Runtime.getRuntime();
        myPrint("Runtime "  + r, cmd);
        try {
        Process p = r.exec(cmd);
        myPrint("Process", "" + p);
        } catch(Exception e) {
        System.out.println("Error executing r.exec(" + cmd + ")");
        }
    } catch(Exception e) {
        System.out.println("Runtime Error executing [" + cmd + "]");
    }
    }

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static Remote WhiteBoard.Invoke.lookup ( String  url )

static

Definition at line 77 of file Invoke.java.

References WhiteBoard.Invoke.myPrint().

Referenced by WhiteBoard.LinesFrameImpl.LinesFrameImpl(), and WhiteBoard.WbClientImpl.WbClientImpl().

                                            {
    for (int j = 0; j < 10; j++) 
        try {
        return Naming.lookup(url);
        } catch (Exception e) {
        myPrint("Naming.lookup(", url + ") not found yet ...");
        try {Thread.sleep(1000);}
        catch (Exception x)  {x.printStackTrace();}
        }
    return null;
    }

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static void WhiteBoard.Invoke.main ( String[]  args )

static

Definition at line 89 of file Invoke.java.

                                           {
    Invoke.javaVM('S', "");
    }

static String WhiteBoard.Invoke.makeURL ( char  c, String  id  )

static

Definition at line 73 of file Invoke.java.

References WhiteBoard.Invoke.rmiRegistryPfx.

                                                    {
    return rmiRegistryPfx + c + id;
    }

static void WhiteBoard.Invoke.myPrint ( String  who, String  what  )

static

Definition at line 31 of file Invoke.java.

References WhiteBoard.Invoke.verbosity.

Referenced by WhiteBoard.Invoke.javaVM(), and WhiteBoard.Invoke.lookup().

                                                        {
    if (verbosity > 0)
        System.out.println(who + ": " + what);
    }

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static String WhiteBoard.Invoke.promptAndGet ( String  msg )

static

Definition at line 37 of file Invoke.java.

References WhiteBoard.Invoke.stdIn.

                                                  {
    if (stdIn == null)
        stdIn = new BufferedReader(new InputStreamReader(System.in));

    String s = null;
    try {
        System.out.print(msg + ": ");
        System.out.flush();
        s = stdIn.readLine();
    } catch (Exception e) {e.printStackTrace();}
    if (s == null || s == "") s = "empty";
    return s;
    }

static void WhiteBoard.Invoke.setJavaCmdPath ( String  s )

static

Definition at line 26 of file Invoke.java.

References WhiteBoard.Invoke.javaCmd.

                                                {
    javaCmd = s;
    }

Member Data Documentation

final String WhiteBoard.Invoke.classNames[] = {serverClass, clientClass,linesClass}

staticprivate

Definition at line 24 of file Invoke.java.

Referenced by WhiteBoard.Invoke.javaVM().

final String WhiteBoard.Invoke.clientClass = "WhiteBoard.WbClientImpl"

staticprivate

Definition at line 21 of file Invoke.java.

String WhiteBoard.Invoke.javaCmd = "java"

staticprivate

The following Srings isolate path related issues.

Definition at line 15 of file Invoke.java.

Referenced by WhiteBoard.Invoke.javaVM(), and WhiteBoard.Invoke.setJavaCmdPath().

final String WhiteBoard.Invoke.linesClass = "WhiteBoard.LinesFrameImpl"

staticprivate

Definition at line 22 of file Invoke.java.

int WhiteBoard.Invoke.pid = 0

staticprivate

Definition at line 11 of file Invoke.java.

Referenced by WhiteBoard.Invoke.javaVM().

final String WhiteBoard.Invoke.rmiRegistryPfx = "//localhost/"

staticprivate

Definition at line 19 of file Invoke.java.

Referenced by WhiteBoard.Invoke.makeURL().

final String WhiteBoard.Invoke.serverClass = "WhiteBoard.WbServerImpl"

staticprivate

Definition at line 20 of file Invoke.java.

BufferedReader WhiteBoard.Invoke.stdIn

staticprivate

Definition at line 10 of file Invoke.java.

Referenced by WhiteBoard.Invoke.promptAndGet().

int WhiteBoard.Invoke.verbosity = 1

static

Definition at line 9 of file Invoke.java.

Referenced by WhiteBoard.Invoke.myPrint().

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The documentation for this class was generated from the following file:

• Invoke.java