What is CLASSPATH variable? What is default classpath? - Java

What is CLASSPATH variable? What is default classpath?

CLASSPATH is an environment variable that communicates JVM and other java applications for finding the java language class libraries, including the developer’s class library.

It is set by setenv command like
setenv CLASSPATH path1:class2 ….

The class libraries of java language that the CLASSPATH points to are JDK classes in lib directory and or any user defined classes.

The default CLASSPATH is .
:bin/../classes:bin/../lib/classes.zip


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