# Draw a ellipse and a rectangle in Java Applet

Java applets are application that can be executed in web browsers or applet viewers . We can draw shapes on the Java applet.
In this article we will draw a ellipse on Java applet by two ways . By using the drawOval(int x, int y, int width, int height) or by using mathematical formula (X= A * sin a, Y= B *cos a, where A and B are major and minor axes and a is the angle ) .
Similarly, we will draw a rectangle on Java applet by two ways . By using the drawRect(int x, int y, int width, int height) or by drawing four lines joining the edges .

To draw a ellipse in Java Applet
Examples:
Let us draw a oval with width 150 and height 100

```Input : x and y coordinates 100, 100 respectively
Width and height 150 and 100 respectively
```

Output : To draw a rectangle in Java Applet
Examples:
We will draw a rectangle of height 200 and width 200 and
At a position 100,100 on the applet.

```Input : x and y coordinates 100, 100 respectively
Width and height 200 and 200 respectively.
```

Output : 1. Java Program to draw a ellipse using drawOval(int x, int y, int width, int height)

 `// java program to draw a ellipse ` `// using drawOval function. ` `import` `java.awt.*; ` `import` `javax.swing.*; ` ` `  `public` `class` `ellipse ``extends` `JApplet { ` ` `  `    ``public` `void` `init() ` `    ``{ ` `        ``// set size ` `        ``setSize(``400``, ``400``); ` ` `  `        ``repaint(); ` `    ``} ` ` `  `    ``// paint the applet ` `    ``public` `void` `paint(Graphics g) ` `    ``{ ` `        ``// set Color for rectangle ` `        ``g.setColor(Color.red); ` ` `  `        ``// draw a ellipse ` `        ``g.drawOval(``100``, ``100``, ``150``, ``100``); ` `    ``} ` `} `

Output : 2. program to draw a ellipse using drawLine function

 `// java program to draw a ellipse ` `// using drawLine function ` `import` `java.awt.*; ` `import` `javax.swing.*; ` ` `  `public` `class` `ellipse ``extends` `JApplet { ` ` `  `    ``public` `void` `init() ` `    ``{ ` `        ``setSize(``300``, ``300``); ` `    ``} ` ` `  `    ``public` `void` `paint(Graphics g) ` `    ``{ ` `        ``// center of the ` `        ``int` `cx, cy; ` ` `  `        ``// center of th ellipse ` `        ``cx = ``150``; ` `        ``cy = ``175``; ` ` `  `        ``// major and minor axis ` `        ``double` `A = ``75``, B = ``50``, px = ``0``, py = ``0``; ` ` `  `        ``// set color ` `        ``g.setColor(Color.red); ` ` `  `        ``// draw the ellipse ` `        ``for` `(``int` `i = ``0``; i <= ``360``; i++) { ` `            ``double` `x, y; ` `            ``x = A * Math.sin(Math.toRadians(i)); ` `            ``y = B * Math.cos(Math.toRadians(i)); ` ` `  `            ``if` `(i != ``0``) { ` `                ``// draw a line joining previous and new point . ` `                ``g.drawLine((``int``)px + cx, (``int``)py + cy, ` `                                ``(``int``)x + cx, (``int``)y + cy); ` `            ``} ` ` `  `            ``// store the previous points ` `            ``px = x; ` `            ``py = y; ` `        ``} ` `    ``} ` `} `

Output : Now we will see how to draw a rectangle in a Java Applet

We can draw rectangle in java applet by two ways.
1. Draw a rectangle using drawRect(int x, int y, int width, int height)

 `// Java Program to  Draw a rectangle ` `// using drawRect(int x, int y, int width, int height) ` `import` `java.awt.*; ` `import` `javax.swing.*; ` ` `  `public` `class` `rectangle ``extends` `JApplet { ` ` `  `    ``public` `void` `init() ` `    ``{ ` `        ``// set size ` `        ``setSize(``400``, ``400``); ` ` `  `        ``repaint(); ` `    ``} ` ` `  `    ``// paint the applet ` `    ``public` `void` `paint(Graphics g) ` `    ``{ ` `        ``// set Color for rectangle ` `        ``g.setColor(Color.red); ` ` `  `        ``// draw a rectangle ` `        ``g.drawRect(``100``, ``100``, ``200``, ``200``); ` `    ``} ` `} `

Output: 2. Draw a rectangle using drawLine(int x, int y, int x1, int y1)

 `// Java Program  Draw a rectangle ` `// using drawLine(int x, int y, int x1, int y1) ` `import` `java.awt.*; ` `import` `javax.swing.*; ` ` `  `public` `class` `rectangle ``extends` `JApplet { ` ` `  `    ``public` `void` `init() ` `    ``{ ` `        ``// set size ` `        ``setSize(``400``, ``400``); ` ` `  `        ``repaint(); ` `    ``} ` ` `  `    ``// paint the applet ` `    ``public` `void` `paint(Graphics g) ` `    ``{ ` `        ``// set Color for rectangle ` `        ``g.setColor(Color.red); ` ` `  `        ``// draw a rectangle by drawing four lines ` `        ``g.drawLine(``100``, ``100``, ``100``, ``300``); ` `        ``g.drawLine(``100``, ``300``, ``300``, ``300``); ` `        ``g.drawLine(``300``, ``300``, ``300``, ``100``); ` `        ``g.drawLine(``300``, ``100``, ``100``, ``100``); ` `    ``} ` `} `

Output : Note : the following programs might not run in an online compiler please use an offline IDE.

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