Question

how to write a Java Program​

Answer 1

We will first create a program that prints "Hello World." ...

Declare your class and your main method. ...

Write the line of code that will print out "Hello World." ...

Put it all together. ...

Save your file and open up command prompt or terminal to compile the program. ...

Run the program........

Answer 2

You can learn it online for free

You can learn it from youtube

Open www.hackerrank.com and create a free account to practice code and participate in challenges.