martti@martti:/usr/bin$ java
The program 'java' can be found in the following packages:
 * j2re1.4
 * kaffe
 * cacao
 * java-gcj-compat
 * gij-4.1
 * jamvm
 * gij-4.2
 * sablevm
Try: sudo apt-get install <selected package>
bash: java: command not found
martti@martti:/usr/bin$ cd ..
martti@martti:/usr$ cd bin
martti@martti:/usr/bin$ dir -l j*
lrwxrwxrwx 1 root root    21 2008-02-16 01:03 jar -> /etc/alternatives/jar
lrwxrwxrwx 1 root root    27 2008-02-16 01:03 jarsigner -> /etc/alternatives/jarsigner
lrwxrwxrwx 1 root root    22 2008-01-27 22:56 java -> /etc/alternatives/java
lrwxrwxrwx 1 root root    23 2008-02-16 01:03 javac -> /etc/alternatives/javac
lrwxrwxrwx 1 root root    25 2008-02-16 01:03 javadoc -> /etc/alternatives/javadoc
lrwxrwxrwx 1 root root    23 2008-02-16 01:03 javah -> /etc/alternatives/javah
lrwxrwxrwx 1 root root    23 2008-02-16 01:03 javap -> /etc/alternatives/javap
lrwxrwxrwx 1 root root    30 2008-02-16 01:03 java-rmi.cgi -> /etc/alternatives/java-rmi.cgi
lrwxrwxrwx 1 root root    25 2008-02-06 10:17 java_vm -> /etc/alternatives/java_vm
lrwxrwxrwx 1 root root    24 2008-02-06 10:17 javaws -> /etc/alternatives/javaws
lrwxrwxrwx 1 root root    26 2008-02-16 01:03 jconsole -> /etc/alternatives/jconsole
lrwxrwxrwx 1 root root    26 2008-02-06 10:17 jcontrol -> /etc/alternatives/jcontrol
lrwxrwxrwx 1 root root    21 2008-02-16 01:03 jdb -> /etc/alternatives/jdb
lrwxrwxrwx 1 root root    22 2008-02-16 01:03 jhat -> /etc/alternatives/jhat
lrwxrwxrwx 1 root root    23 2008-02-16 01:03 jinfo -> /etc/alternatives/jinfo
lrwxrwxrwx 1 root root    22 2008-02-16 01:03 jmap -> /etc/alternatives/jmap
-rwxr-xr-x 1 root root 23532 2007-09-29 14:51 join
lrwxrwxrwx 1 root root    21 2008-02-16 01:03 jps -> /etc/alternatives/jps
lrwxrwxrwx 1 root root    28 2008-02-16 01:03 jrunscript -> /etc/alternatives/jrunscript
lrwxrwxrwx 1 root root    27 2008-02-16 01:03 jsadebugd -> /etc/alternatives/jsadebugd
lrwxrwxrwx 1 root root    24 2008-02-16 01:03 jstack -> /etc/alternatives/jstack
lrwxrwxrwx 1 root root    23 2008-02-16 01:03 jstat -> /etc/alternatives/jstat
lrwxrwxrwx 1 root root    24 2008-02-16 01:03 jstatd -> /etc/alternatives/jstatd
martti@martti:/usr/bin$ dir -l /etc/alternatives/j*
lrwxrwxrwx 1 root root 31 2008-02-16 01:03 /etc/alternatives/jar -> /usr/lib/jvm/java-6-sun/bin/jar
lrwxrwxrwx 1 root root 41 2008-02-16 01:03 /etc/alternatives/jar.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jar.1.gz
lrwxrwxrwx 1 root root 37 2008-02-16 01:03 /etc/alternatives/jarsigner -> /usr/lib/jvm/java-6-sun/bin/jarsigner
lrwxrwxrwx 1 root root 47 2008-02-16 01:03 /etc/alternatives/jarsigner.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jarsigner.1.gz
lrwxrwxrwx 1 root root 33 2008-02-16 01:03 /etc/alternatives/javac -> /usr/lib/jvm/java-6-sun/bin/javac
lrwxrwxrwx 1 root root 43 2008-02-16 01:03 /etc/alternatives/javac.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/javac.1.gz
lrwxrwxrwx 1 root root 35 2008-02-16 01:03 /etc/alternatives/javadoc -> /usr/lib/jvm/java-6-sun/bin/javadoc
lrwxrwxrwx 1 root root 45 2008-02-16 01:03 /etc/alternatives/javadoc.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/javadoc.1.gz
lrwxrwxrwx 1 root root 33 2008-02-16 01:03 /etc/alternatives/javah -> /usr/lib/jvm/java-6-sun/bin/javah
lrwxrwxrwx 1 root root 43 2008-02-16 01:03 /etc/alternatives/javah.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/javah.1.gz
lrwxrwxrwx 1 root root 33 2008-02-16 01:03 /etc/alternatives/javap -> /usr/lib/jvm/java-6-sun/bin/javap
lrwxrwxrwx 1 root root 43 2008-02-16 01:03 /etc/alternatives/javap.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/javap.1.gz
lrwxrwxrwx 1 root root 40 2008-02-16 01:03 /etc/alternatives/java-rmi.cgi -> /usr/lib/jvm/java-6-sun/bin/java-rmi.cgi
lrwxrwxrwx 1 root root 39 2008-02-16 01:03 /etc/alternatives/java_vm -> /usr/lib/jvm/java-6-sun/jre/bin/java_vm
lrwxrwxrwx 1 root root 36 2008-02-16 01:03 /etc/alternatives/jconsole -> /usr/lib/jvm/java-6-sun/bin/jconsole
lrwxrwxrwx 1 root root 46 2008-02-16 01:03 /etc/alternatives/jconsole.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jconsole.1.gz
lrwxrwxrwx 1 root root 40 2008-02-16 01:03 /etc/alternatives/jcontrol -> /usr/lib/jvm/java-6-sun/jre/bin/jcontrol
lrwxrwxrwx 1 root root 31 2008-02-16 01:03 /etc/alternatives/jdb -> /usr/lib/jvm/java-6-sun/bin/jdb
lrwxrwxrwx 1 root root 41 2008-02-16 01:03 /etc/alternatives/jdb.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jdb.1.gz
lrwxrwxrwx 1 root root 32 2008-02-16 01:03 /etc/alternatives/jhat -> /usr/lib/jvm/java-6-sun/bin/jhat
lrwxrwxrwx 1 root root 42 2008-02-16 01:03 /etc/alternatives/jhat.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jhat.1.gz
lrwxrwxrwx 1 root root 33 2008-02-16 01:03 /etc/alternatives/jinfo -> /usr/lib/jvm/java-6-sun/bin/jinfo
lrwxrwxrwx 1 root root 43 2008-02-16 01:03 /etc/alternatives/jinfo.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jinfo.1.gz
lrwxrwxrwx 1 root root 32 2008-02-16 01:03 /etc/alternatives/jmap -> /usr/lib/jvm/java-6-sun/bin/jmap
lrwxrwxrwx 1 root root 42 2008-02-16 01:03 /etc/alternatives/jmap.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jmap.1.gz
lrwxrwxrwx 1 root root 31 2008-02-16 01:03 /etc/alternatives/jps -> /usr/lib/jvm/java-6-sun/bin/jps
lrwxrwxrwx 1 root root 41 2008-02-16 01:03 /etc/alternatives/jps.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jps.1.gz
lrwxrwxrwx 1 root root 38 2008-02-16 01:03 /etc/alternatives/jrunscript -> /usr/lib/jvm/java-6-sun/bin/jrunscript
lrwxrwxrwx 1 root root 48 2008-02-16 01:03 /etc/alternatives/jrunscript.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jrunscript.1.gz
lrwxrwxrwx 1 root root 37 2008-02-16 01:03 /etc/alternatives/jsadebugd -> /usr/lib/jvm/java-6-sun/bin/jsadebugd
lrwxrwxrwx 1 root root 47 2008-02-16 01:03 /etc/alternatives/jsadebugd.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jsadebugd.1.gz
lrwxrwxrwx 1 root root 34 2008-02-16 01:03 /etc/alternatives/jstack -> /usr/lib/jvm/java-6-sun/bin/jstack
lrwxrwxrwx 1 root root 44 2008-02-16 01:03 /etc/alternatives/jstack.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jstack.1.gz
lrwxrwxrwx 1 root root 33 2008-02-16 01:03 /etc/alternatives/jstat -> /usr/lib/jvm/java-6-sun/bin/jstat
lrwxrwxrwx 1 root root 43 2008-02-16 01:03 /etc/alternatives/jstat.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jstat.1.gz
lrwxrwxrwx 1 root root 34 2008-02-16 01:03 /etc/alternatives/jstatd -> /usr/lib/jvm/java-6-sun/bin/jstatd
lrwxrwxrwx 1 root root 44 2008-02-16 01:03 /etc/alternatives/jstatd.1.gz -> /usr/lib/jvm/java-6-sun/man/man1/jstatd.1.gz
martti@martti:/usr/bin$ martti@martti:/usr/bin$ java