EDIT all the commands suggested by @sim my screen looks this way:

#type java java is /bin/java #rpm -aq | grep jdk jdk-1.7.0_40-fcs.x86_64 // is this one oracle java? java-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64 #alternatives --display java |grep best Current `best' version is /usr/java/latest/bin/java. #type -a /usr/java/default/bin/java /usr/java/default/bin/java is /usr/java/default/bin/java #rpm -qf /usr/java/default/bin/java jdk-1.7.0_40-fcs.x86_64 // I assume this one is oracle java. 

Is /usr/java/default/bin/java the home for oracle java?

I just installed Fedora 19 and managed to get FedoraUtils installed. So I chose java oracle. after installation I could see in the FedoraUtils list that oracle java (installed) but I can't see the Oracle Java anywhere.

mta auto /usr/sbin/sendmail.sendmail javac auto /usr/java/latest/bin/javac jre_1.7.0_openjdk auto /usr/lib/jvm/jre-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64 mkisofs auto /usr/bin/genisoimage ld auto /usr/bin/ld.bfd java auto /usr/java/latest/bin/java jre_1.7.0 manual /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64/jre pax auto /usr/bin/spax print auto /usr/bin/lpr.cups jre_openjdk manual /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64/jre libnssckbi.so.x86_64 auto /usr/lib64/pkcs11/p11-kit-trust.so libjavaplugin.so.x86_64 auto /usr/java/default/jre/lib/amd64/libnpjp2.so fakeroot auto /usr/bin/fakeroot-tcp unrar auto /usr/bin/unrar-nonfree xinputrc auto /etc/X11/xinit/xinput.d/ibus.conf cifs-idmap-plugin auto /usr/lib64/cifs-utils/idmapwb.so 

I just installed Fedora 19 and managed to get FedoraUtils installed. So I chose java oracle. after installation I could see in the FedoraUtils list that oracle java (installed) but I can't see the Oracle Java anywhere.

mta  auto /usr/sbin/sendmail.sendmail javac  auto /usr/java/latest/bin/javac jre_1.7.0_openjdk  auto /usr/lib/jvm/jre-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64 mkisofs  auto /usr/bin/genisoimage ld  auto /usr/bin/ld.bfd java  auto /usr/java/latest/bin/java jre_1.7.0  manual /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64/jre pax  auto /usr/bin/spax print  auto /usr/bin/lpr.cups jre_openjdk  manual /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64/jre libnssckbi.so.x86_64  auto /usr/lib64/pkcs11/p11-kit-trust.so libjavaplugin.so.x86_64  auto /usr/java/default/jre/lib/amd64/libnpjp2.so fakeroot  auto /usr/bin/fakeroot-tcp unrar  auto /usr/bin/unrar-nonfree xinputrc  auto /etc/X11/xinit/xinput.d/ibus.conf cifs-idmap-plugin  auto /usr/lib64/cifs-utils/idmapwb.so 

I just installed Fedora 19 and managed to get FedoraUtils installed. So I chose java oracle. after installation I could see in the FedoraUtils list that oracle java (installed) but I can see the oracle java anywhere.

As ubuntu user I run the update-java-alternatives -l command but it didn't work. below is the output of alternatives --list  :

mta auto /usr/sbin/sendmail.sendmail javac auto /usr/java/latest/bin/javac jre_1.7.0_openjdk auto /usr/lib/jvm/jre-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64 mkisofs auto /usr/bin/genisoimage ld auto /usr/bin/ld.bfd java auto /usr/java/latest/bin/java jre_1.7.0 manual /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64/jre pax auto /usr/bin/spax print auto /usr/bin/lpr.cups jre_openjdk manual /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64/jre libnssckbi.so.x86_64 auto /usr/lib64/pkcs11/p11-kit-trust.so libjavaplugin.so.x86_64 auto /usr/java/default/jre/lib/amd64/libnpjp2.so fakeroot auto /usr/bin/fakeroot-tcp unrar auto /usr/bin/unrar-nonfree xinputrc auto /etc/X11/xinit/xinput.d/ibus.conf cifs-idmap-plugin auto /usr/lib64/cifs-utils/idmapwb.so 

I don't remember typing openJDK but apparently it's installed. I will really like to find out where oracle-java. I don't mind having the 2. When I check for the version in order to get the default java

[joseph@localhost ~]$ java -version java version "1.7.0_40" Java(TM) SE Runtime Environment (build 1.7.0_40-b43) Java HotSpot(TM) 64-Bit Server VM (build 24.0-b56, mixed mode) 

Question 1 : Where is oracle java installed

Question 2 : How to check default java in fedora

Question 3 :I will like to set up system environment for JAVA_HOME, how does it work in /etc/environment ?

I just installed Fedora 19 and managed to get FedoraUtils installed. So I chose java oracle. after installation I could see in the FedoraUtils list that oracle java (installed) but I can't see the Oracle Java anywhere.

As an Ubuntu user I would run the update-java-alternatives -l command but it didn't work. Below is the output of alternatives --list:

mta auto /usr/sbin/sendmail.sendmail javac auto /usr/java/latest/bin/javac jre_1.7.0_openjdk auto /usr/lib/jvm/jre-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64 mkisofs auto /usr/bin/genisoimage ld auto /usr/bin/ld.bfd java auto /usr/java/latest/bin/java jre_1.7.0 manual /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64/jre pax auto /usr/bin/spax print auto /usr/bin/lpr.cups jre_openjdk manual /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.60-2.4.2.0.fc19.x86_64/jre libnssckbi.so.x86_64 auto /usr/lib64/pkcs11/p11-kit-trust.so libjavaplugin.so.x86_64 auto /usr/java/default/jre/lib/amd64/libnpjp2.so fakeroot auto /usr/bin/fakeroot-tcp unrar auto /usr/bin/unrar-nonfree xinputrc auto /etc/X11/xinit/xinput.d/ibus.conf cifs-idmap-plugin auto /usr/lib64/cifs-utils/idmapwb.so 

I don't remember typing openJDK but apparently it's installed. I would really like to find out where's oracle-java. I don't mind having the 2. When I check for the version in order to get the default java:

[joseph@localhost ~]$ java -version java version "1.7.0_40" Java(TM) SE Runtime Environment (build 1.7.0_40-b43) Java HotSpot(TM) 64-Bit Server VM (build 24.0-b56, mixed mode) 

• Question 1 : Where is oracle java installed
• Question 2 : How to check default java in fedora
• Question 3 :I will like to set up system environment for JAVA_HOME, how does it work in /etc/environment?