Trying to create myRect class then draw giving problems

Question

Please help me I am Intro Java Student.
Thanks
My Rect class looks like following:
import java.awt.*;
import javax.swing.*;
public class MyRect extends Object{
private int x1=0,y1=0,w=0,h=0; // Coordinates of the Point
/* No-arguments Constructor
public MyRect()
setMyRect(0,0,0,0);
// Set x1,x2,y1,y2 Coordinates for the Rect
public void MyRect (int a, int b, int c, int d)
x1 = a;
y1 = b;
w = c;
h = d;
System.out.println("Values" + a b c +d);
// get Coordinates
public int getX1()
return x1;
public int getY1()
return y1;
public int getW()
return w;
public int getH()
return h;
public static void main(String arguments[]) {
MyRect rect = new MyRect();
Then created TestDraw.java
import java.awt.*;
import javax.swing.*;
public class TestDraw extends JApplet {
private MyLine line[]; // Array of line objects (ADT)
private MyOval oval[]; // Array of oval objects (ADT)
private MyRect rect[]; // Array of rectangle objects (ADT)
public void initDraw() // Routine to intialize applet GUI
line = new MyLine[ 5 ];
line[ 0 ] = new MyLine( 100, 100, 200, 200 );
line[ 1 ] = new MyLine( 200, 200, 100, 100 );
line[ 2 ] = new MyLine( 300, 300, 100, 100 );
line[ 3 ] = new MyLine( 400, 400, 0, 0 );
line[ 4 ] = new MyLine( 100, 100, 300, 300 );
oval = new MyOval[ 5 ];
oval[ 0 ] = new MyOval( 100, 100, 200, 200 );
oval[ 1 ] = new MyOval( 200, 200, 100, 100 );
oval[ 2 ] = new MyOval( 300, 300, 100, 100 );
oval[ 3 ] = new MyOval( 400, 400, 30, 200 );
oval[ 4 ] = new MyOval( 100, 100, 300, 300 );
rect = new MyRect[ 5 ];
rect[ 0 ] = new MyRect( 100, 100, 200, 200 );
rect[ 1 ] = new MyRect( 200, 200, 100, 100 );
rect[ 2 ] = new MyRect( 300, 300, 100, 100 );
rect[ 3 ] = new MyRect( 400, 400, 30, 200 );
rect[ 4 ] = new MyRect( 100, 100, 300, 300 );
// paint method called to draw applet GUI to the display
public void paint( Graphics g )
initDraw(); // Initialize line,oval, and rectangle objects
// Ask each line object to draw itself
for ( int i = 0; i < line.length; i++ )
     line[ i ].draw( g );
// Ask each oval object to draw itself
for ( int i = 0; i < oval.length; i++ )
     oval[ i ].draw( g );
// Ask each rectangle object to draw itself
for ( int i = 0; i < rect.length; i++ )
     rect[ i ].draw( g );
It fails giving following error:
TestDraw.java:32:cannot resolve symbol
Symbol:class MyRect
location:class TestDraw
rect[4]=new MyRect<100,100,300,300>;

Answer 1

I think your program is having trouble using MyRect as it is defined in an external file and it doesn't know where to get MyRect from.
Try putting something in the following form in the first line of MyRect.java
package <path>.<path>;
Where <path> is a directory from you classpath which contains the classes you wish to access, that being MyRect in this case (this must be in this path of course).
So if you classpath was c:/jdk1.3.1/ and your file to reference is in c:/jdk1.3.1/classes/myclasses you would use in MyRect.java:
package classes.myclasses;
Then in TestDraw.java you can import your package using:
import classes.myclasses.*;
Which will give you access to classes methods within the myclasses directory. Try this out and if it doesn't work send me the files in email and I'll try and look at them at home.
Mark.