alessandro@alessandro-X550EP:~$ dpkg -l|grep jdk
ii openjdk-7-jdk:amd64 7u75-2.5.4-1~trusty1 amd64 OpenJDK Development Kit (JDK)
ii openjdk-7-jre:amd64 7u75-2.5.4-1~trusty1 amd64 OpenJDK Java runtime, using Hotspot JIT
ii openjdk-7-jre-headless:amd64 7u75-2.5.4-1~trusty1 amd64 OpenJDK Java runtime, using Hotspot JIT (headless)
alessandro@alessandro-X550EP:~$ dpkg -l|grep tea
ii icedtea-7-jre-jamvm:amd64 7u75-2.5.4-1~trusty1 amd64 Alternative JVM for OpenJDK, using JamVM
ii icedtea-7-plugin:amd64 1.5-1ubuntu1 amd64 web browser plugin based on OpenJDK and IcedTea to execute Java applets
ii icedtea-netx:amd64 1.5-1ubuntu1 amd64 NetX - implementation of the Java Network Launching Protocol (JNLP)
ii icedtea-netx-common 1.5-1ubuntu1 all NetX - implementation of the Java Network Launching Protocol (JNLP)
ii icedtea-plugin 1.5-1ubuntu1 all web browser plugin to execute Java applets (dependency package)
alessandro@alessandro-X550EP:~$ dpkg -l|grep jre
ii icedtea-7-jre-jamvm:amd64 7u75-2.5.4-1~trusty1 amd64 Alternative JVM for OpenJDK, using JamVM
ii openjdk-7-jre:amd64 7u75-2.5.4-1~trusty1 amd64 OpenJDK Java runtime, using Hotspot JIT
ii openjdk-7-jre-headless:amd64 7u75-2.5.4-1~trusty1 amd64 OpenJDK Java runtime, using Hotspot JIT (headless)
alessandro@alessandro-X550EP:~$ dpkg -l|grep java
ii ca-certificates-java 20130815ubuntu1 all Common CA certificates (JKS keystore)
ii gir1.2-javascriptcoregtk-3.0 2.4.3-1ubuntu2 amd64 JavaScript engine library from WebKitGTK+ - GObject introspection data
ii java-common 0.51 all Base of all Java packages
ii libatk-wrapper-java 0.30.4-4 all ATK implementation for Java using JNI
ii libatk-wrapper-java-jni:amd64 0.30.4-4 amd64 ATK implementation for Java using JNI (JNI bindings)
ii libjavascriptcoregtk-3.0-0:amd64 2.4.3-1ubuntu2 amd64 JavaScript engine library from WebKitGTK+
ii tzdata-java 2015a-0ubuntu0.14.04 all time zone and daylight-saving time data for use by java runtimes
alessandro@alessandro-X550EP:~$