Hello,
ABC question as I could not get a direct answer: How to locate the default IO class of JAVA? My question was triggered by the row in most java program
as I am very curious where the io class is located in my Mint14 (Ubuntu12.10). I am aware it is similar to use DBI in PERL, or #include <stream> in C++, where I could locate the packages/libraries in certain directories:
but I could not locate any file name (io.class, or io.jre) for this io class in java? Have checked my system for the libraries:
Also checked Oracle website, where there is:
but I could not find this file in my system, and the java program works fine. Can anybody give me some explanantion about the "default IO, file, string, date & time, etc classes" of java1.7.x when it was installed. My java is:
Thanks a lot!
I have a java classpath running inside of a unix shell script. During my testing it will error with lines that show an example like this below.
java.io.FileNotFoundException error
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:129),
... (2 Replies)
This question is realted to UNIX and Java.
I sing in to a UNIX server and I want to change my CLASSPATH locally, so it won't affect any other users CLASSPATHS.
Is the command 'export PATH=...' the way to do it?
Thanks.
Duplicate post (0 Replies)
This question is realted to UNIX and Java.
I sing in to a UNIX server and I want to change my CLASSPATH locally, so it won't affect any other users CLASSPATHS.
Is the command 'export PATH=...' the way to do it?
Thanks. (4 Replies)
Hi,
I have a below command....
$JAVA_HOME/bin/java -cp "/usr/orabase/product/10.2.0/lib:/usr/java/javajar/common/sched.jar:/usr/orabase/product/10.2.0/jdbc/lib/ojdbc14_g.jar:/usr/orabase/product/10.2.0/jdbc/lib/classes12.jar" com.abrt.smart.Smart
I want to know where the Smart.class is... (1 Reply)
Hi All,
I'm trying to play around with Java Servlets. I have a apache web server running on Solaris. And I'm trying to understand which file I add the JAVA CLASSPATH too so that when apache starts up it will have access to mysql interface libraries etc.
Could some one please tell me?
... (0 Replies)
Saw an error while setting up an application called i2phex:
# ./run.sh
java.lang.RuntimeException: Failed to initialize phex.net.repres.i2p.I2PPresentationManager
at phex.common.ManagerController.initializeManagers(ManagerController.java:78)
at phex.Main.main(Main.java:161)After... (0 Replies)
Hi,
When I login to my HP-UX and fire the "set" command I see that the weblogic 9.2 classpath is already set.
However, I wish to override the classpath to weblogic version 10.3
I have a script call setWLSEnv.sh that has the desired classpath.
Thus, in my unix script i write
.... (6 Replies)
Have no idea on what the below error message is:
Process not running: /opt/java15/jdk/bin/java -classpath /opt/apache/apache-ant-1.7.0-mod/lib/ant-launcher.jar org.apache.tools.ant.launch.Launcher -buildfile build.xml dist.
Any help? (3 Replies)
1. The problem statement, all variables and given/known data:
As a excercise I have to compile a program (Hello2.java) with a class file (HelloText.java) in another directory. (As you seen in the screenshot)
Iīm setting a PATH and a CLASSPATH (system variables). Itīs working without a... (2 Replies)
Discussion started by: MenschTown
2 Replies
LEARN ABOUT DEBIAN
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)