Printing from java program

Create custom exception. Create an Immutable Class. Related Topics Java Object toString. Java Object hashCode. Java ArrayList toString. Java Object equals. Java Program to Print object of a class In this tutorial, we will learn to print the object of a class in Java.

Share on:. Did you find this article helpful? Sorry about that. How can we improve it? It accepts string as a parameter. After printing the statement, it throws the cursor at the starting of the next line. It is the main difference between the println and the print method. The above method first invokes the print String method and then println method. The printf method is used if we want to print the formatted string to the console using the specified format string and arguments.

It is also an overloaded method of the PrintStream class. The method behaves the same as the invocation of the format method. If the number of arguments is more than the format specifiers, the other arguments are ignored. The number of arguments may be zero. It throws NullPointerExcepption if the format is null and also throws the IllegalFormatException if a format string contains illegal syntax. The problem with the above three methods is that we cannot directly use the methods.

The reason is that we cannot create an object of the PrintStream class, directly. It means:. It is an invalid way to call the method. Java provides an alternative way to create an instance of the PrintStream class that is System. It represents the Standard Output Stream. It means that if we want to print any statement on the console, we should use the following statement:.

Let's understand the meaning of the above print statements. In the above two statements, we observe that the statement is braked into three parts:. Usually, we use the print or println method to print the statement. You'll get the exact output as of previous program.

Since the program given above, prints pattern of stars with limited number of lines or rows. Therefore let's modify the program and create a new one that allows user to define the row size of star pattern:. Note - To increase the size, just increase the value of row from 5 to more say 8, 10, 11 etc. Also the above program can also be created in this way, to allow user to define the size of the pattern:. The PrinterException will be thrown if there is problem sending the job to the printer.

However, since the PrinterJob. This job control boilerplate is sufficient for basic printing uses. Imageable area accounts for the margin limits of most printers hardware margin. The imageable area is the space inside these margins, and in practice if is often further limited to leave space for headers or footers. The complete code for this example is in HelloWorldPrinter.