Actually, the problem is having a wrong command, not classpath issue.
It should read
without the extension. The "dot" is considered a namespace separator so Java runtime will look for a file HelloWorld/java.class in the current directory and of course it does not exist.
Hi,
I have the following problem. I have 2 programs, a java program and a c++ program. These 2 programs have to communicate with each other in full duplex mode. I want to use pipes for this communication. So when the c++ program pust something on the stdout the java program must be able to read... (4 Replies)
Say in unix (AIX) m/c, I am logged in with s1 user and want to start process p1 with user credentials of s2.
I can do manually in this way:
#su - s2
#enter password for s2> somePassword
$ p1
But all this I have to do through a java program. How to pass the password through program.
One... (1 Reply)
I have a simple script like this:
for file in $dodfiles; do
./rundod $file
done
$dodfiles is an array of file names selected
rundod is a script which invokes a java progrm which process a data file
all the processing message logged into a log file
in order to extract and analyze the... (1 Reply)
Hey all,
My boss tasked me with the job to write a script which would invoke various java programs, the thing is I don't know much about shell scripting so would you experts help me out?
Here is the requirement
- 2 applications written in java: App_A and App_B
-... (0 Replies)
Hello all sorry didnt know where to post it
i compiled simple program that using "System.getProperty("user.dir");"
now i compiled the program under directory foo and and its running great when i do "java myapp"
i included this directory in the $PATH env variable so i could see it fro any where... (1 Reply)
I am entirely new to shell scripting and would like to create a script to execute a java program called Main. I've already compiled it and placed the .java and .class files at /root/javaTest. Next I made a shell script that simply contained: java /root/javaTest/Main . I made the script... (2 Replies)
Hi All,
I need to to wright a java programm for the following query.
Qus: output need to genarate a number+ alphnumric sequence in java and get converted into ASCII code so that i can use mod logic on that. example
Output: like 10 digit number
1AAAAAAAAA
1AAAAAAAAB
1AAAAAAAAC
.
.... (4 Replies)
Hello,
I have a project directory in /home/researcher
I have in my project/src three packages:A (contains the main class), B and C and I have 2 jar-files file1.jar file2.jar files in the project/my-jars
In Class A I import other classes from the other packages
I compiled as follows:... (4 Replies)
Hello,
The arguments are strings. In my code I need them to be a different type, I do the cast but it is not feasible ...
Have you any idea?
Thank you (8 Replies)
What is the trick to get a java program to run and compile? I can't even get a basic skeleton to run and compile. What packages do I need? I figured the java-gcj and gcc-java packages was enough. Do I need any other packages?
I thought I had to do this and it would work but its not.
javac... (1 Reply)
Discussion started by: cokedude
1 Replies
LEARN ABOUT CENTOS
java-wrappers
JAVA-WRAPPERS(7) Java wrappers JAVA-WRAPPERS(7)NAME
java-wrappers - capacities shared by java wrapper scripts
DESCRIPTION
Most Java programs are not run directly, but through small shell scripts that take care of various things, such as finding a suitable java
environment and looking for libraries.
To ease the task of the maintainers, they rely on a library providing runtime detection, library detection and other features. This manual
page describes the common features of all those scripts, and to which point you can configure them. This is mainly done via environment
variables.
ENVIRONMENT VARIABLES
java-wrappers understands some environment variables:
JAVA_CMD
The java command that will be run. If this variable is set, it disables all lookup for a java runtime.
JAVA_BINDIR
Specifies a directory that will be looked for a java or a jdb executable (depending on the setting of JAVA_DEBUGGER). It has prece-
dence over JAVA_HOME but not over JAVA_CMD.
JAVA_HOME
A path to a java runtime. If this variable is set, all lookup for a java runtime is disabled, except that if no java executable is
found in the path, the command java is used.
JAVA_FLAVOR
A probably more easy-to-use version of the JAVA_HOME variable: instead of specifying the full path of the java runtime, you name it.
List of available flavors can be found in the file /usr/lib/java-wrappers/jvm-list.sh. See examples below.
JAVA_DEBUGGER
If this is set, the wrapper will try to pick up a java debugger rather than a java interpreter. This will fail if the jbd of the
runtime found is a stub.
JAVA_CLASSPATH
Additional classpath, will have priority over the one found by the wrapper.
JAVA_ARGS
Additional arguments to the java command. They will come before all other arguments.
FORCE_CLASSPATH
If this variable is set, it will be the only classpath. You'd better know what you are doing.
DEBUG_WRAPPER
This is probably the most important variable; if it set, the wrapper will print out useful information as it goes by its business,
such as which runtime it did find, and which command is run eventually.
JAVA_JARPATH
The path where the wrappers will go looking for jar archives. If not set, the wrapper will look into the default directory,
/usr/share/java. Warning : the wrapper will not look anywhere else than in JAVA_JARPATH. Setting it incorrectly will most probably
result in early crashes.
EXAMPLES
The examples all rely on rasterizer(1), from the package libbatik-java, but they really apply to all scripts that use java-wrappers.
Print out debugging information:
DEBUG_WRAPPER=1 rasterizer
Limit rasterizer's memory to 80 MB:
JAVA_ARGS=-Xmx80m rasterizer
Force rasterizer to run with kaffe(1):
JAVA_HOME=/usr/lib/kaffe rasterizer
The same, but using JAVA_BINDIR:
JAVA_BINDIR=/usr/lib/kaffe/bin rasterizer
Force rasterizer to run with openjdk:
JAVA_FLAVOR=openjdk rasterizer
Debug rasterizer with Sun's debugger, while printing debugging information from the wrapper:
DEBUG_WRAPPER=1 JAVA_CMD=/usr/lib/jvm/java-6-sun/bin/jdb rasterizer
BUGS
Care has been taken to make the wrappers bug-free. If that was not the case, please file a bug report against the java-wrappers package.
If you wish to submit any problem with a java executable relying on java-wrappers, please also submit the output of the command run with
DEBUG_WRAPPER=1. It will save one mail exchange and therefore potentially reduce the time it takes to fix the bug.
DEVELOPERS
There is currently no documentation about writing a wrapper script save the comments in /usr/lib/java-wrappers/java-wrappers.sh. If you
have to write one, we suggest you base yourself upon, for instance, the rasterizer wrapper script, or any other one (just pick up any
direct reverse dependency of java-wrappers and look for scripts).
SEE ALSO java(1), jdb(1)
/usr/lib/java-wrappers/java-wrappers.sh
AUTHOR
java-wrappers and its documentation were written by Vincent Fourmond <fourmond@debian.org>
Version 0.1.16 2010-05-04 JAVA-WRAPPERS(7)