graphics - Applet Resize in DDA algorithm implementation in Java -

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i implementing line dda algorithm in java. code seems fine.

the problem facing resizing applet size. applet output small , want work applet window size of 640-by-480.
have used resize(640,480); in beginning of paint() method not work. is, gives output correct on small window (i think 350-by-200) , enlarges 640-by-480 , program not terminate (i have forcefully exit program). appreciated. implementation code is:

package line;  import java.applet.applet; import java.awt.color; import java.awt.graphics; import java.util.scanner;  public class ddaline extends applet {      @override     public void paint(graphics g) {             //resize(640,480);         g.setcolor(color.red);          float x,y,x1,y1,x2,y2,dx,dy,steps,incrx,incry;         int i;         scanner sc = new scanner(system.in);         system.out.println("enter value of x1 : ");         x1 = sc.nextint();         system.out.println("enter value of y1 : ");         y1 = sc.nextint();         system.out.println("enter value of x2 : ");         x2 = sc.nextint();         system.out.println("enter value of y1 : ");         y2 = sc.nextint();          dx = math.abs(x2-x1);         dy = math.abs(y2-y1);          if(dx>=dy)         steps=dx;         else         steps=dy;          incrx=dx/steps;         incry=dy/steps;          x=x1;         y=y1;          i=1;          while(i<=steps) {             g.drawline(math.round(x),math.round(y),math.round(x),math.round(y));             x=x+incrx;             y=y+incry;             i=i+1;             try {                 thread.sleep(100);             } catch (interruptedexception ex) {             }         }     } }

solved putting setsize() method in init() method. code is:

import java.applet.applet; import java.awt.color; import java.awt.graphics; import java.util.scanner;  public class ddaline extends applet {   @override public void init(){     setsize(800, 600); }  @override public void paint(graphics g) {     g.setcolor(color.red);  float x,y,x1,y1,x2,y2,dx,dy,steps,incrx,incry; int i; scanner sc = new scanner(system.in); system.out.println("enter value of x1 : "); x1 = sc.nextint(); system.out.println("enter value of y1 : "); y1 = sc.nextint(); system.out.println("enter value of x2 : "); x2 = sc.nextint(); system.out.println("enter value of y1 : "); y2 = sc.nextint();  dx = math.abs(x2-x1); dy = math.abs(y2-y1);  if(dx>=dy) steps=dx; else steps=dy;  incrx=dx/steps; incry=dy/steps;  x=x1; y=y1;  i=1;      while(i<=steps) {                   g.drawline(math.round(x), math.round(y), math.round(x), math.round(y));           x=x+incrx;           y=y+incry;           i=i+1;         try {             thread.sleep(100);         } catch (exception ex) {         }     } }

}


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