Java is a general-purpose computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible. It is intended to let application developers "write once, run anywhere" (WORA), meaning that compiled Java code can run on all platforms that support Java without the need for recompilation.Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of computer architecture. As

1. Basics of Java (1)
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2. Simple JAVA Program
class one
{
public static void main(String[] arg)
{
System.out.println(“MY first Java Program“);
}
}
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3. First Line [ class one ]
•class one declares a class
•Everything must be placed inside a class.
•Class is KEYWORD
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4. Opening Brace [ { ]
•Every class definition in java begins with an
opening brace “{” and ends with closing brace
“}”
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5. Main line
[ public static void main(String[] arg) ]
•This line contains 3 keywords
•public
• static
• void
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6. public
• Public keyword is an Access specifier.
• If Method has access specifier as public that means
it can be accessible to all other classes.
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7. static
•Static keyword declare method as one that
belongs to entire class not a part of any objects
of the class.
•Main must always be declared as static.
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8. void
•Void keyword states that the main method does
not return any value
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9. Output line
•In c language we use printf(“ ”);
•In c++ we use cout<<“ ”;
•In java we have to use
• System.out.println(“ ”);
println is a member of the out object, which is static
data member of System class.
Prepared by Rushit Bhadaniya

10. Output line
•In c language we use printf(“ ”);
•In c++ we use cout<<“ ”;
•In java we have to use
• System.out.println(“ ”);
println is a member of the out object, which is static
data member of System class.
Prepared by Rushit Bhadaniya

11. Save program as one.java

12. Compile and run source file

13. Thank You!!!