CODEWITHSUNDEEP
c#java.net
Michael Pfiffer
Michael Pfiffer

Reputation: 115

An object reference is required for the non-static field, method, or property

I wrote a very small function to start a Java application in C# NET, but I am getting the error "An object reference is required for the non-static field, method, or property 'MinecraftDaemon.Program.LaunchMinecraft()' C:\Users\Mike\Desktop\Minecraft\MinecraftDaemon\Program.cs". I have searched other threads that suffer from the same issue but I don't understand what it means or why I am getting it.

namespace MinecraftDaemon
{
    class Program
    {
        public void LaunchMinecraft()
        {
            ProcessStartInfo processInfo = new ProcessStartInfo("java.exe", "-Xmx1024M -Xms1024M -jar minecraft_server.jar nogui");
            processInfo.CreateNoWindow = true;
            processInfo.UseShellExecute = false;

            try
            {
                using (Process minecraftProcess = Process.Start(processInfo))
                {
                    minecraftProcess.WaitForExit();
                }
            }
            catch
            {
                // Log Error
            }
        }

        static void Main(string[] args)
        {
            LaunchMinecraft();
        }
    }
}

Upvotes: 3

Views: 31187

Answers (5)

Vaibhav Brahme
Vaibhav Brahme

Reputation: 11

     static void Main(string[] args)
            {
                Program pg = new Program();
                pg.LaunchMinecraft();

            }

Try this.

Upvotes: 0

Austin Salonen
Austin Salonen

Reputation: 50215

LaunchMinecraft is not a static method so you cannot access it in the static method Main without calling it from the Program object.

Two options
1. Make LaunchMinecraft static 

public void LaunchMinecraft() 
{ ... }

2. Create a new Program object in Main and call it that way.

var program = new Program();
program.LaunchMinecraft();

Upvotes: 4

biziclop
biziclop

Reputation: 49724

I don't know much about C# but the Main() method is static, while LaunchMinecraft() isn't, that's the cause of this error.

Upvotes: 0

Bryan Watts
Bryan Watts

Reputation: 45445

You need to change it to:

public static void LaunchMinecraft()

That way, the static Main method can access the static LaunchMinecraft method.

Upvotes: 4

Femaref
Femaref

Reputation: 61437

You are trying to call an instance method (ie. a method that needs a specific object to operate on) from a static method (a method that works without a specific object). Make the LaunchMinecraft method static as well.

Upvotes: 0

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