System.out.println
SYSTEM.OUT.PRINTLN(): AN INTRODUCTION
The System.out.println() method is a fundamental tool in Java programming that displays a statement on the standard output. Here, the system is a class that belongs to the Java dot lang package. However, you cannot create an object of the system class because all its properties are static.
Remember, in Java, the ‘S’ in the system should be in capitals, and the statement should always end with a semicolon. It is a crucial rule to follow while writing coding statements in Java.
The ‘System’ class has three static data members: ‘in, ‘ out, ‘and ‘err. ‘ While the ‘in’ data member represents an input stream, ‘out’ represents an output stream. Consequently, when you use ‘System.out’, the JVM returns a print stream object. As such, this object allows you to delegate data to the standard output, or console, through the ‘println’ method of the print stream class.
In summary, the System is the class, and the out is its data member. println is the method. The programmer can write the arguments within the brackets. The println will display the arguments from the brackets on the display console or the monitor.
The Role of Methods in Java Programming:
It is well known that all methods return a value. Similarly, among the various methods we use in Java programming, System.out.println() is a popular method that returns an object by printing the text on the standard output, i.e., the console.
For example, if we write System.out.println()
The programmer can include any parameter or arguments to print within the double quotes, such as System.out.println(“This is my First Java Program”);
PRINTLN IN JAVA:
1. In Java, “Println” is also accepted instead of “System.out.println”.
2. In “Println”, the “ln” takes the cursor to the following line after printing the command.
3. Example:
System.out.println(“Hello World!…..”);
Output: Hello World!…..
| //cursor moves to next line after printing output.
println(“Hello World!…..”);
Output: Hello World!…..
| //cursor moves to the next line after printing output.
4. We can also write “print”, but the cursor doesn’t go to the following line after.
print(“Hello World!…..”);
Output: Hello World!…..| //cursor stays at the same line.