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I'm not a Java programmer, so I don't know the correct value for CLASSPATH. But, you seem to. You can add it to ~/.bashrc like so:
CLASSPATH=/path/to/1:/path/to/2:/etc
The change will take effect globally the next time you log in. However, it will take effect immediately in new shells.
Additionally, if you want to set it for just one particular command, do this:
CLASSPATH=/something command-here arg1 arg2
A third way would be to create a wrapper script, which would be appropriate if you needed to set multiple variables or if you needed to determine appropriate values programmatically:
#!/bin/bash
export CLASSPATH=/something
export ANOTHER_ENV_Variable=foo
exec your_fancy_program "$@"
that's what happened with me.. i left empty spaces while typing.. it fixed when i removed spaces.
1) if you want to set classpath permanently then 1) find out where java is installed.. you may use " whereis java " openjdk-7/6 is in /usr/lib/jvm/.....
2) we need to set up CLASSPATH in /etc/environment
sudo gedit /etc/environment
3) add the following likes .. ( DONT LEAVE ANY SPACES WHILE TYPING)(customize according to your java version and installation) (this home path is for open jdk 7)
JAVA_HOME="/usr/lib/jvm/java-7-openjdk-i386/bin"
export JAVA_HOME
CLASSPATH=".:/usr/lib/jvm/java-7-openjdk-i386/lib:/home/laptop/Desktop/a2"
export CLASSPATH
separate directory by ":"
Importing has nothing to do with loading classes or setting CLASSPATH.
Try this:
java -cp .;../lib/* Generator
Using the dot '.' as the first entry in the CLASSPATH assumes that the Generator.class file exists in the directory from which you're running java, and /lib is one level up from that directory. Adjust as needed if both of these are not correct.
You should run the program including again the same cp:
java -cp "lib directory where i put all the jars" MainClassOfYourApplication
After you compiled it with:
javac -cp "lib directory where i put all the jars" AvroReader.java
More applied to your example:
First step(compile all the needed java files): javac -cp "path/to/jars/*" AvroReader.java //here you should include all the java files not yet compiled but which you need to run your app
Second step: java -cp "path/to/jars/*" package.subpackage1.subpackage2.Generator
As per my understanding you want to change the classpath which you have set by command
set classpath=d:java
can be done
in two ways either you can set classpth directly as environment varible by
--> Right click on my computer select advanced options
--> there you will see option as environment variables open that option
--> now you will see multiple variables being set...search for classpath variable if it exist
their edit this variable value by just putting semicolon and write ur full classpath ended by semicolon and save it.
FOR EG:-
variable name:- CLASSAPTH
variable value- .;C:\Oracle\product\10.1.0\Client_2\jdbc\lib\ojdbc14.jar;
Second option is just set your class in command promt as u have set earlier
by opening command prompt
set classpath=C:\Oracle\product\10.1.0\Client_2\jdbc\lib\ojdbc14.jar;
both the method are easy but i would prefer you should go with first one as by doing that you didn't need to set your classpath again and again after you reboot your system or application.
If u want to do while running your java program ,you can use
java -classpath C:\java\MyClasses utility.myapp.Cool
for more details about class path see oracle documentation about classpath.