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Aug 23rd, 2006

How can i run this program from a jar.

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I am using IBM Websphere, and from here i can just click Run As java application, and the program runs inside websphere. But i want to run the program outside IDE.

I created a jar file and everthing is correct with it. It has the MANIFEST.MF and all.

So what do i need to do to run this from cmd.exe? I would like cmd to open when the jar file is double clicked so that the program will use the command line as the input?

Java Syntax (Toggle Plain Text)
import java.io.*;	// Java I/O classes
public class L3P3
{
	public static void main(String []arg) throws IOException		// throws IOException
	{
		BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
 
		System.out.println("Enter in your full name");
		String s1 = input.readLine();
		StringBuffer tmp = new StringBuffer(s1);
		String s2 = tmp.reverse().toString();
 
		System.out.println("Your reversed name is " + "\"" + s2 + "\"");
	}
}
import java.io.*;	// Java I/O classes
public class L3P3
{
	public static void main(String []arg) throws IOException		// throws IOException
	{
		BufferedReader input = new BufferedReader(new InputStreamReader(System.in));

		System.out.println("Enter in your full name");
		String s1 = input.readLine();
		StringBuffer tmp = new StringBuffer(s1);
		String s2 = tmp.reverse().toString();

		System.out.println("Your reversed name is " + "\"" + s2 + "\"");
	}
}

Thanks, sj

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Sailor_Jerry

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Junior Poster in Training

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Feb 22nd, 2007

Re: How can i run this program from a jar.

if u want to run ur jar from cmd means just run like this just go to ur file location through cmd and then type

javaw -jar filename.jar

or
java -jar filename .jar

main thing is your OS should hav JVM otherwise jar file wont run

vinod_javas

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Practically a Posting Shark

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Feb 22nd, 2007

Re: How can i run this program from a jar.

ur has nothing to do with it. Java didn't exist when people were living there.

to make an executable jar, you need to provide the Main-Class attribute in the manifest file inside the jar.

jwenting

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duckman

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since Nov 2004

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May 1st, 2008

Re: How can i run this program from a jar.

Thank you for this was helpful to me.
But I tried like

(Toggle Plain Text)

Java -jar blpack.jar

like you said but it giving error

Quote ...

Failed to load Main-Class manifest attribute from blpack.jar

Please any body help me? I used Eclipse3.2.2

haleemsl

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Newbie Poster

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May 2nd, 2008

Re: How can i run this program from a jar.

How to make a Jar File I used this to learn how. The author explains it very well.

jasimp

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