Labs

1. Browse to your JDK's installation location, also known as JAVA_HOME. On MacOS, it's usually /Library/Java/JavaVirtualMachines/jdk1.M.N_P.jdk/Contents/Home/, where M, N, and P are the major, minor, and patch version numbers of your installed JDK.

Browse to the jre/bin/ subfolder and look at the binaries (executables) there.

Browse to the jre/lib/ subfolder and look at the .jar files there.

Compare the bin/ subfolder directly under JAVA_HOME to jre/bin/.

1. In Eclipse open the JVM project. Expand JRE System Library and compare the list of .jar files with what's listed in JAVA_HOME/jre/lib/.

Under JRE System Library expand rt.jar. Find the java.lang package. Do you see any familiar classes?

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