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How to draw a star in java?

  1. public class RightTrianglePattern.
  2. {
  3. public static void main(String args[])
  4. {
  5. //i for rows and j for columns.
  6. //row denotes the number of rows you want to print.
  7. int i, j, row=6;
  8. //outer loop for rows.

How do you draw shapes in Java?

  1. Create a new Frame .
  2. Create a class that extends the Component class and override the paint method.
  3. Use Graphics2D.
  4. Use Graphics2D.
  5. Use Graphics2D.
  6. Use Graphics2D.

Why is String immutable in Java?

The String is immutable in Java because of the security, synchronization and concurrency, caching, and class loading. The reason of making string final is to destroy the immutability and to not allow others to extend it. The String objects are cached in the String pool, and it makes the String immutable.

What are the star patterns?

The patterns of stars seen in the sky are usually called constellations, although more acurately, a group of stars that forms a pattern in the sky is called an asterism. Astronomers use the term constellation to refer to an area of the sky.

Which tool is used to execute an applet?

Using an applet viewer, such as the standard tool, applet-viewer. An applet viewer executes your applet in a window. This is generally the fastest and easiest way to test your applet.

What are shapes Java?

The Shape interface provides definitions for objects that represent some form of geometric shape. The Shape is described by a PathIterator object, which can express the outline of the Shape as well as a rule for determining how the outline divides the 2D plane into interior and exterior points.

How do you make an ellipse in Java?

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 ) .

IS NULL keyword in Java?

No, null is not a keyword. Though they seem like keywords null, true and, false are considered as literals in Java.

Is string immutable in Java?

Since Strings are immutable in Java, the JVM optimizes the amount of memory allocated for them by storing only one copy of each literal String in the pool.

What is hashCode () in Java?

The hashCode() is a method of Java Integer Class which determines the hash code for a given Integer. It overrides hashCode in class Object. By default, this method returns a random integer that is unique for each instance.

What is the most beautiful star?

  1. Sirius A (Alpha Canis Majoris) Our number one star on the list.
  2. Canopus (Alpha Carinae)
  3. Rigil Kentaurus (Alpha Centauri)
  4. Arcturus (Alpha Bootis)
  5. Vega (Alpha Lyrae)
  6. Capella (Alpha Aurigae)
  7. Rigel (Beta Orionis)
  8. Procyon (Alpha Canis Minoris)

Which color of star is hottest?

White stars are hotter than red and yellow. Blue stars are the hottest stars of all.

What is known as the largest star?

The largest known star in the universe is UY Scuti, a hypergiant with a radius around 1,700 times larger than the sun. … And it’s not alone in dwarfing Earth’s dominant star.

What is applet and its types?

A special type of Java program that runs in a Web browser is referred to as Applet. It has less response time because it works on the client-side. It is much secured executed by the browser under any of the platforms such as Windows, Linux and Mac OS etc. There are two types of applets that a web page can contain.

How do you make a simple applet?

  1. If you are creating a new applet source file, select Java Class Library under Projects. Click Next.
  2. If you want to import an applet source file, select Java Project with Existing Sources. Click Next. Specify the file’s location in the Source Packages Folder text box.