while Loop

Looping is a part of programming which is the program executed continously until it reaches the

If Statement

if statement is a conditional statement in programming. In this statement we are using the conditonal operators. this is true or false only. if the conditional statement is true the program execute the true statements, if the conditional statement is false the program execute the false statements.

sample program:

this program will show to you if the grade of students is greater than 75 the program will show message "Your passed" else "Sorry your Failed".

import java.io.*;

public class sample
{
public static void main(String args[])
{
int average=75;

if(average>=75)
{
System.out.print("Your Passed");
}
else
{
System.out.print("Your Failed");
}

}

}

Conditional Operators

Conditional operators are used in programming to perform condition in a program to execute statement.


1. (>) greater than
2. (<) Less than
3. (>=) Greater than equal
4. (<=) Less that equal
5. (==) Equal
6. (!=) not equal

next lesson is if statement.

Keywords in Java programming

The following keywords in java programming are:

abstract assert boolean break byte case catch char class

const continue default do double else enum extends final

finally float for goto if implements import instanceof

int interface long native new package private protected public

return short static strictfp super switch synchronized this throw

throws transient try void volatile while

it is used in java programming to implement a code and generate a function to have a correct statement.

Declaring variables in java

to declare a variable in java we use the data type.
example:
int a;
int a=5;
float rph=1.2;
char s;
char let='A';
String s[]={"Hello", "World"};

Types, Values, and Variables

the java data types are:
--> integer
-->float
-->character
--> String
--> double

the values accept by the following data types are.
integer - 1,2,3,4,5,6,789,78
float - 1.2,1.0,3.8..... etc
character - 'A','a' ,'t' ,'h' ....
String - "Hello", "jaypee"
double - 1.22,1.04,1.90 .....

Hello world using java

this is a simple program in java.

import java.io.*;

public class helloworld
{
public static void main(String args[])
{
system.out.print("Hello World");
}
}