Hello : How to Create Your First Java Program

Hello : How to Create Your First Java Program

It's a First Program Of Java⬇

class Suryansh
{
public static void main(String a[])
{
System.out.println("hello");
}
}

format of save the java program & Important points

  format:  classname.java

{ first letter of class name is always capital } 

{class name and file name is always same }

ex: Suryansh.java,Technical.java

Save this file on C, D,E,F etc drive . before run the java program first set the Environment path .

 OutPut

Compile the Program

we will use the javac command[CMD] to convert your Java program into a form more amenable for execution on a computer.

• first open CMD

  
  C:\Users\username>d: {drive name}
  
  D:\>cd java {folder name when program is saved} 
  

• Assuming the file, say  Suryansh.java, is in the current working directory, type the javac command give space and your program name.

D:\java>javac Suryansh.java 

• write our java & our program name with out ".java" 

If everything went well, you should see no error messages.

Execute the Program

You will use the java command to execute your program.

• From the Command Prompt, type the java command below.

  D:\java>java Suryansh
  
  Hello
  

  If all goes well, you should see the output of the program - Hello