create a jar file in the current directory

Question

I am looking to create a jar file in the current directory.

I did this in command line:

jar cfe MyApp.jar MyApp MyApp.class

Alternatively, i put the following into Mnf.txt:

Main-Class: MyApp.class

and ran

jar cfm MyApp.jar Mnf.txt MyApp.class

When i try to run it with

java jar MyApp.jar

I get the following error in both cases:

Error: could not find or  load main class.

Mnf.txt & MyApp.class is in the current directory.

There`s no package definition in MyApp. Everything is in the current directory.

No idea what i`m missing here.

//===================

ADD:

Changing the content of Mnf.txt to:

Main-Class: MyApp

didn't change anything. i'm getting the same error.

those are both jar, not java. mistyped here. thanks for the correction. — Roam, Mar 01 '14 at 00:40
nothing on command line. it`s creating the jar file,i`m seeing it by jar tf MyApp.jar . — Roam, Mar 01 '14 at 00:45
`jar cfev MyApp.jar MyApp MyApp.class` said `added manifest adding MyApp.class(in=12501)(out=5638)(deflated 54%)`. — Roam, Mar 01 '14 at 00:47
'jar cfmv ..' said the same thing, + one more line: 'MyApp.class(in=24188)(out=5558)(deflated 77%)' — Roam, Mar 01 '14 at 00:49

score 1 · Answer 1 · answered Mar 01 '14 at 00:47

1

Do not add ".class" to the name of the class in the manifest.

Java differentiates rather strongly between names of files on disk and class names.

answered Mar 01 '14 at 00:47

pls see the part below the line comment. didn't help. – Roam Mar 01 '14 at 00:54

score 0 · Answer 2 · answered Mar 01 '14 at 00:46

0

There should be manifest entry: Main-Class: MyApp without .class

answered Mar 01 '14 at 00:46

m-szalik

didn't help. pls see the part below the line comment. – Roam Mar 01 '14 at 00:53

score 0 · Accepted Answer · answered Mar 01 '14 at 00:50

0

Use

java -jar MyApp.jar

to run the main class in the jar

jar cfe MyApp.jar MyApp MyApp.class
java -jar MyApp.jar

answered Mar 01 '14 at 00:50

Ravinder Reddy

3 Answers3