Hello guys, welcome to lingarajtechhub.com. Today we are, solve the expression in Java – a^2/4.
Code:
package com.div.java;
public class Div {
public static void main(String[] args) {
int a=5;
float c=a*a/(float)4;
System.out.println("Result:"+c);
}
}Line-1:
- package com.div.java
It is a java package , this package is created in a java project and it contains classes inside the package.
Line-2:
- public class Div
“Div” is the class-name , class is a template used to create objects & class-name first letters must be capital. It is public means we can use this outside of the package.
Line-3:
- public static void main(String[] args)
It is a main method in which we can execute a program.
- public : It is an access modifier. The main() is public because we can access main() outside of the class , if main() can’t be public then JVM(Java Virtual Machine) can’t be called main() & code can’t be executed.
- Static : static is a keyword in which the main method has to be static in which JVM can load the class into memory and call the main method without creating an instance.
- Void : Void is a data type. It means no return type.
- main(): Main is a function.
- String [] args : string means collection of characters ,String[] args represents a collection of Strings that are separated by a space and can be typed into the program on the terminal directly.
Line-4:
- int a=5
Here “ a” is the variable and int (Integer) is a data type of the variable.Here ”a” value assigned 5.
Line-5:
- float c=a*a/(float)4
Here “c” is a variable where a given question output will be stored and float is the data type.
a*a/(float)4 Here float is a type casting .Type casting means automatically changing a value of one primitive data type to another data type.
Line-6:
- System.out.println(“Result:”+c)
system is a predefined class .Out is a static variable of type printstream present in system class. Println shows the result.
