Help.about "java -jar"

execute "java -cp second.jar;main.jar main.Main", it is ok.
but
execut "java -jar -cp second.jar main.jar", it fails. It report that java can't find one class in second.jar. The second.jar is not any changed.

if you use the -jar arg, then java needs to know which Main-class to run in the jar. You have to state this explicitly in the file 'Manifest.mf' which should be in your jar-file in the folder 'meta-inf'. In that file state the location of the main-class like this:
Main-Class: package1.package2.MyMainClassName
greetz,
Stijn

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URGENT HELP about java.util.zip.ZipException: invalid entry CRC

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Both computers have the last version of java, but one is Windows and the other is Linux.
Any help to find the source of this problem??
Thanks in advance.

Sorry, I give poor information about this problem.
This is the full error showed when I execute this command: java -jar app.jar
Unable to load resource: java.util.zip.ZipException: invalid entry CRC (expected 0x358054d7 but got 0x7dc370ba)
java.util.zip.ZipException: invalid entry CRC (expected 0x358054d7 but got 0x7dc370ba)
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at java.io.FilterInputStream.read(Unknown Source)
at com.simontuffs.onejar.JarClassLoader.copy(JarClassLoader.java:818)
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at com.simontuffs.onejar.JarClassLoader.loadByteCode(JarClassLoader.java:371)
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at com.simontuffs.onejar.Boot.run(Boot.java:224)
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at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at com.simontuffs.onejar.Boot.run(Boot.java:240)
at com.simontuffs.onejar.Boot.main(Boot.java:89)
app.jar is a JAR file created with fat-jar eclipse plugin, to make easier to generate a JAR file with all dependencies.
I think that is not a code related problem, because this program is executed in several computers without errors.
I trasport this JAR to the client computer via HTTP.
I'm trying to find clues to find the origin of this problem.
Thanks.

Need help about java

guys i need ur help.
i have just started to learn java. but not getting the basics of it. can u plz suggest any book for it ? so that i can start studying it. how should i proceed? plz provide me the necessary information about it.

I'd suggest forgetting about Java until you have
learnt English.
ur, u, plz are not words.That's indeed a valuable input. I'm fearing the day
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Help with Java JAR file opbfuscation.

I am looking for a free (no $) for use on commercial java code
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(using Jode itself for obfuscation is too complex for my purposes).
Is there a simple way to beat decompilers like Jode and DJ,
without a financial outlay if possible,
given how easy it is to decompile Java bytecode?

All interesting remarks, everyone!
Proguard doesn't prevent decompilation on something very small, like a jar
with one or two classes.
Proguard is free(no money) for use over commercial java code,
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Mac and Linux platorfms.
It also correctly obfuscates and links external java libraries
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I'm just wondering if there is something similar to proguard on licensing arrangements,
working over small amounts of code, and beating
the decompilers (like Jode).
I have used the code obfuscation that Dr.Java performs on it's classes during compilation.
And while the resulting class file tested does confound Jode,
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Considering how easy it is to break class files, I was figuring that either Sun
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code even happening at all?
Any ideas?
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First let me say what i understand of ur problem,
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Also, Oracle claims that you can use newer drivers, such as the 10g drivers, with older databases. See the Interoperability Matrix:
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Hello,
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As I told a friend of yours with the very same question yesterday:
there's a white text field to the left. Type "USB" there. Hit Enter or click the ">>" button.

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Hi,
I have
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Hi,
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Try using JDK 1.7 - (version 51.0) as I have no problem running with 1.7.0_21
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About Java 2 opaque font color question, help needed!

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Hi. The way I'd do it would be to use the font metrics to find the length of a string and draw a rectangle and then drawstring over the rectangle. If you want an example, I can post it although I suspect theres a better way.

Beginner in java and need your help about DES

hello,
I m a new guy in java programming and learn from many books.I m making a website and portal right now and dying need your help about DES.my portal (using java) requires somebody to make a login name and a password.I m done with the server and client things and rite now stuck with this "DES" stuff.
so I make some conditions and algorithm below..
1. when a user login,the password is encrypted.at this point,cleartext(id) and encryption (M,N) are involve.
2. then the key is changed based on algorithm.
3.the key changed by key(id) is received and the original text should be encrypted.
the algorithm
1. the original text x1.x2.x3.x4.x5.x6.x7.x8 (64 bits)
2. encypt the password
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b.The 1st bit of the 1st character in (IP) is set to '1', and the 8th bit of the 8th character as '64'.
c.the rest (IP) is like this
1 2 3 4 5 6 7 8
0 # 58 50 42 34 26 18 10 2
8 # 60 52 44 36 28 20 12 4
16 # 62 54 46 38 30 22 14 6
24 # 64 46 48 40 32 24 16 8
32 # 57 49 41 33 25 17 9 1
40 # 59 51 43 35 27 19 11 3
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d. and lastly,from above,,it should be done like this
1 2 3 4 5 6 7
0 # 40 8 48 16 56 24 64 32
8 # 39 7 27 15 55 23 53 31
16 # 38 6 26 14 54 22 52 30
24 # 37 5 25 13 53 21 51 29
32 # 36 4 24 12 52 20 50 28
40 # 35 3 23 11 51 19 49 27
48 # 34 2 21 10 50 18 48 26
56 # 33 1 20 9 49 17 47 25
e. key y1,y2,y3,y4,y5,y6,y7,y8 (64bit)
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b.the process is repeat again.
anybody has an idea to help me with the sample program?
thanks in advance...

just ask about a simple program how to receive a
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Help.about "java -jar"

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