Page 60 - iPro_trackGPT_V5_Class8
P. 60
Initialising a Variable
Intitialising means assigning a value to the variable at the time of declaration. We can initialise
variables in the following way:
int age = 30;
String name = “Amrita”;
float temp = 35.7f;
double price = 625.50;
Here, variables age, name, temp, and price are initialised with the values 30, “Nisha”, 35.7, and
625.50, respectively.
Tech Tweak
We can also assign values to variables after declaration in the following way:
age = 30;
name = “Amrita”;
temp = 35.7f;
price = 625.50;
Comments
A comment in a Java program is a piece of text that the Java compiler ignores. Comments are
essential for adding extra information about the code, making it easier for others (and yourself)
to understand and maintain.
There are three ways to add comments in Java:
Single-Line Comments (//): Use two forward slashes (//) to start a comment. The compiler
will treat everything after // on that line as a comment and ignore it.
Multi-Line Comments (/*...*/): Use /* to start and */ to end a multi-line comment. This is
useful when you want to comment out multiple lines of code.
Documentation Comments (/**...*/): These are special comments used with the javadoc
tool to generate HTML documentation. They are commonly placed before classes, methods,
or fields to provide detailed documentation.
For example,
public class comments{
public static void main(String[] args){
System.out.println("Comment Examples");
// This is a single line comment.
/* This is
multiline
comment*/
/** These types of comments are used when you want to add HTML code
into your Java program*/
}
}
58 TrackGPT iPRO (V5.0)-VIII

