Regarding the path variable. somebody please help !!!
I have a small problem, I have to change the path variable often. So I thought of creating two .bat files to change it when i needed. But the problem is in XP...
set Path=%Path%;C:\myfolder;
command doesnt seems to be working. Actually it doesnt change the Path system variable at all. Please help me with this and Sorry if i have posted the questing in a wrong forum.
Kawisha.
Hi
First of all as I know there is a limit for the length of the path string.
For the second time if you change the path in a CMD than this doesn't change the path string of the system only the CMD path string has changed.
If you want to change to system path string than do it in the Control Panel/System/Special Tab/Enviroment Variables/System Variables/Path.
Ott Karesz
http://www.trendo-kft.hu
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Thanks
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// The "Keys3" class.
import java.applet.*;
import java.awt.*;
import java.awt.Event;
import java.awt.Font;
import java.awt.Color;
import java.applet.AudioClip;
public class Keys3 extends java.applet.Applet
char currkey;
int currx, curry, yint, xint;
int itmval [] = new int [5],
locval [] = new int [5],
tempx [] = new int [5], tempy [] = new int [5],
tot = 0, score = 0;
boolean check = true;
AudioClip bgSound, bgSound2;
AudioClip hit;
private Image offscreenImage;
private Graphics offscreen; //initializing variables for double buffering
public void init () //DONE
bgSound = getAudioClip (getCodeBase (), "sound2_works.au");
hit = getAudioClip (getCodeBase (), "ah_works.au");
if (bgSound != null)
bgSound.loop ();
currx = 162;
curry = 68;
setBackground (Color.white);
for (int count = 0 ; count < 5 ; count++)
itmval [count] = (int) (Math.random () * 5) + 1;
locval [count] = (int) (Math.random () * 25) + 1;
requestFocus ();
public void paint (Graphics g) //DONE
resize (350, 270);
drawgrid (g);
if (check = true)
pickitems (g);
drawitems (g);
g.setColor (Color.darkGray);
g.fillOval (currx, curry, 25, 25);
if (currkey != 0)
g.setColor (Color.darkGray);
g.fillOval (currx, curry, 25, 25);
if (collcheck () != true)
collision (g);
else
drawitems (g);
} // paint method
public void update (Graphics g) //uses the double buffering method to overwrite the original
//screen with another copy to reduce flickering
if (offscreenImage == null)
offscreenImage = createImage (this.getSize ().width, this.getSize ().height);
offscreen = offscreenImage.getGraphics ();
} //what to do if there is no offscreenImage copy of the original screen
//draws the backgroudn colour of the offscreen
offscreen.setColor (getBackground ());
offscreen.fillRect (0, 0, this.getSize ().width, this.getSize ().height);
//draws the foreground colour of the offscreen
offscreen.setColor (getForeground ());
paint (offscreen);
//draws the offscreen image onto the main screen
g.drawImage (offscreenImage, 0, 0, this);
public boolean keyDown (Event evt, int key) //DONE
switch (key)
case Event.DOWN:
curry += 46;
if (curry >= 252)
curry -= 46;
if (hit != null)
hit.play ();
break;
case Event.UP:
curry -= 46;
if (curry <= 0)
curry += 46;
if (hit != null)
hit.play ();
break;
case Event.LEFT:
currx -= 66;
if (currx <= 0)
currx += 66;
if (hit != null)
hit.play ();
break;
case Event.RIGHT:
currx += 66;
if (currx >= 360)
currx -= 66;
if (hit != null)
hit.play ();
break;
default:
currkey = (char) key;
repaint ();
return true;
public boolean collcheck () //DONE
if (((currx == tempx [0]) && (curry == tempy [0])) || ((currx == tempx [1]) && (curry == tempy [1])) || ((currx == tempx [2]) && (curry == tempy [2])) || ((currx == tempx [3]) && (curry == tempy [3])) || ((currx == tempx [4]) && (curry == tempy [4])))
return false;
else
return true;
public void collision (Graphics g)
drawgrid (g);
for (int count = 0 ; count < 5 ; count++)
if ((currx == tempx [count]) && (curry == tempy [count]))
g.setColor (Color.darkGray);
g.fillOval (currx, curry, 25, 25);
else if ((currx != tempx [count]) && (curry != tempy [count]))
g.setColor (Color.red);
g.fillRect (tempx [count], tempy [count], 25, 25);
public void drawitems (Graphics g)
for (int count = 0 ; count < 5 ; count++)
g.setColor (Color.red);
g.fillRect (tempx [count], tempy [count], 25, 25);
public void pickitems (Graphics g)
check = false;
for (int count = 0 ; count < 5 ; count++)
if (locval [count] <= 5)
tempy [count] = 22;
else if (locval [count] <= 10)
tempy [count] = 68;
else if (locval [count] <= 15)
tempy [count] = 114;
else if (locval [count] <= 20)
tempy [count] = 160;
else if (locval [count] <= 25)
tempy [count] = 206; //this determines the y-position of the item to be placed
if (locval [count] % 5 == 0)
tempx [count] = 294;
else if ((locval [count] == 1) || (locval [count] == 6) || (locval [count] == 11) || (locval [count] == 16) || (locval [count] == 21))
tempx [count] = 30;
else if ((locval [count] == 2) || (locval [count] == 7) || (locval [count] == 12) || (locval [count] == 17) || (locval [count] == 22))
tempx [count] = 96;
else if ((locval [count] == 3) || (locval [count] == 8) || (locval [count] == 13) || (locval [count] == 18) || (locval [count] == 23))
tempx [count] = 162;
else if ((locval [count] == 4) || (locval [count] == 9) || (locval [count] == 14) || (locval [count] == 19) || (locval [count] == 24))
tempx [count] = 228;
public void drawgrid (Graphics g) //DONE
g.drawRect (10, 10, 330, 230); //draws the outer rectangular border
int wi = 10; //width of one square on the board
int hi = 10; //height of one square on the board
for (int height = 1 ; height <= 5 ; height++)
for (int row = 1 ; row <= 5 ; row++)
if (((height % 2 == 1) && (row % 2 == 1)) || ((height % 2 == 0) && (row % 2 == 0)))
g.setColor (Color.gray);
g.fillRect (wi, hi, 66, 46);
else /*if (((height % 2 == 0) && (row % 2 == 1)) || ((height % 2 == 0) && (row % 2 == 0)))*/
g.setColor (Color.lightGray);
g.drawRect (wi, hi, 66, 46);
g.setColor (Color.lightGray);
g.drawRect (wi, hi, 66, 46); //drawn twice to make a shadow effect
wi += 66;
wi = 10;
hi += 46;
} //this draws the basic outline of the game screen
} // Keys3 class
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