K&B pg 805

[Sahil Kapoor]

It is possible to create environment variables that provide an alias for long classpaths, The classpath for some of the jar files in J2SE can be quite long
ans o it is common for such an alias to be used when defining a classpath.If you see something like JAVA_HOME or $JAVA_HOME in examquestion it just means
"That part of the absolute classpath up to the directories we are specifying explicitly." You can assume that the JAVA_HOME literal means this, and is pre-pended to the partial classpath you use.

Problem 1: Dint understand English sentence and the meaning.


Problem 2 : I want to issue following command from anywhere in my Computer using windows

java -jar jar1.jar , where jar1 is an executable jar. Suppose it is in C:\

I used c:\jar1.jar; in class path

but when i issue the above command , it says cannot find jar1.jar ???


Thanks !!!

[Rajeev Rnair]

You can set environment variables (like JAVA_HOME) and access by $JAVA_HOME
For example: if you have JAVA_HOME=\usr\bin\java as env variable, you can say

CLASSPATH=$JAVA_HOME\jre\lib:$JAVA_HOME\lib: 

It means $JAVA_HOME will be replaced with "\usr\bin\java" so that you don't have to write extremely long class paths.

#2 Have you tried adding -classpath? eg: java -classpath xxx -jar jar1.jar