jdk and sql developer

How did you install these files? If you installed them with help of the package management system (apt, dpkg, software-center etc.), then you should be able to easily remove them the same way.

I followed some tuto @internet but it didn't work for me..

"it didn't work for me" does not tell us anything.

It is like "I cannot drive with my car." This can be anything from "no drivers license", "no fuel", "no pressure in the tires" to "engine breakdown" and more. Each of these problems requires different repair actions.

What did not work? The installation of the uninstall action?
What kind of error do you get if you try?

Please provide more information if you want us to help. We cannot see your system, only you can.

Please also paste some basic information about your system and the status of the packages that you want to get rid of, e.g. the output of the terminal commands

uname -a
lsb_release -crid
dpkg -l | grep jdk
dpkg -l | grep sql

      uname -a

Linux nouha-VPCEH16EF 3.19.0-20-generic #20-Ubuntu SMP Fri May 29 10:10:47 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

      lsb_release -crid

Distributor ID: Ubuntu
Description: Ubuntu 15.04
Release: 15.04
Codename: vivid

       dpkg -l | grep sql

ii akonadi-backend-mysql 1.13.0-2ubuntu4 all MySQL storage backend for Akonadi
ii libhsqldb1.8.0-java 1.8.0.10+dfsg-3ubuntu1 all Java SQL database engine
ii libmysqlclient18:amd64 5.6.24-0ubuntu2 amd64 MySQL database client library
ii libmysqlclient18:i386 5.6.24-0ubuntu2 i386 MySQL database client library
ii libqt4-sql:amd64 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1 amd64 Qt 4 SQL module
ii libqt4-sql:i386 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1 i386 Qt 4 SQL module
ii libqt4-sql-mysql:amd64 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1 amd64 Qt 4 MySQL database driver
ii libqt4-sql-mysql:i386 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1 i386 Qt 4 MySQL database driver
ii libqt4-sql-sqlite:amd64 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1 amd64 Qt 4 SQLite 3 database driver
ii libqt5sql5:amd64 5.4.1+dfsg-2ubuntu4.1 amd64 Qt 5 SQL module
ii libqt5sql5-sqlite:amd64 5.4.1+dfsg-2ubuntu4.1 amd64 Qt 5 SQLite 3 database driver
ii libqtscript4-sql:amd64 0.2.0-1 amd64 QtScript bindings for the Qt 4 SQL library
ii libreoffice-sdbc-hsqldb 1:4.4.2-0ubuntu2 amd64 HSQLDB SDBC driver for LibreOffice
ii libsqlite3-0:amd64 3.8.7.4-1 amd64 SQLite 3 shared library
ii libsqlite3-0:i386 3.8.7.4-1 i386 SQLite 3 shared library
ii mysql-client-core-5.6 5.6.24-0ubuntu2 amd64 MySQL database core client binaries
ii mysql-common 5.6.24-0ubuntu2 all MySQL database common files, e.g. /etc/mysql/my.cnf
ii mysql-server-core-5.6 5.6.24-0ubuntu2 amd64 MySQL database server binaries
rc sqldeveloper 4.1.0.19.07-2 all Oracle SQL Developer

"it didn't work for me": I meant here that after finishing tuto, the icon appears but cannot launch it

What tutorial was that? If you have a problem with a tutorial from some other source, you should better contact it's provider.

I see just remnants of a "sqldeveloper" package. You can get rid of them with the command

sudo dpkg --purge sqldeveloper

You have not provided the requested output about jdk, so how do you expect that we can help with that?

Problem Solved
thanks!