How to Write, Compile and Run Your First Java Program?

How to Write, Compile and Run Your First Java Program?

Before running Java programs you have to introduce and arrangement

java. For establishment direct read: Java Installation: Downloading, Installing and Setting Path

How to compose and run Java programs?

  • Open scratchpad and compose underneath the code.
class demo
{
                public
static void main(String…S)
                {
                                System.out.println(“Java
Programming”);
                }
}
How to Write, Compile and Run Your First Java Program?
  • Presently spare the document with name demo.java on the work area. Here you can supplant demo with whatever another name that you need.
  • At that point, open order brief (cmd) and type album work area and press enter to change current registry to the desktop area.
How to Write, Compile and Run Your First Java Program?

We changed the catalog in light of the fact that our program is saved money on the work area.

  • To arrange java program type javac demo.java and hit enter. Type java demo to run the program. Recollect that here we need to accumulate
    • with the program name and execute with a class name that we have utilized in program. The java program name and class name can be extraordinary.
How to Write, Compile and Run Your First Java Program?

Understanding the program

How to Write, Compile and Run Your First Java Program?

Framework: Get reference id of the gadget on

which program is running. Here the gadget is cmd.

out: Store the reference id of the gadget.

println: Throw the yield on the gadget.

A.java A.java A.java
class A
 {

}
class A
{
public static void main()
{
}
}
compile Yes Yes Yes
.class file Not created Created Created
execute No No Yes

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