Не могу установить 7-ю java.

public class HelloWorld {
  public static void main(String[] args) {
    System.out.println("Здравствуй, мир!");
  }
}

javac hw.java

Error: A JNI error has occurred, please check your installation and try again
Error: A JNI error has occurred, please check your installation and try again
Error: A JNI error has occurred, please check your installation and try again

java -version
javac -verbose MainClass.java

splinter@bastile:~/src/Java/HW$ java -version
java version "1.6.0_25"
Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
Java HotSpot(TM) Server VM (build 20.0-b11, mixed mode)

javac -verbose MainClass.java
Error: A JNI error has occurred, please check your installation and try again
Error: A JNI error has occurred, please check your installation and try again
Error: A JNI error has occurred, please check your installation and try again

splinter@bastile:~/Downloads/jdk1.7.0_45/bin$ ./java -version
java version «1.7.0_45»
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) Server VM (build 24.45-b08, mixed mode)

splinter@bastile:~/Downloads/jdk1.7.0_45/bin$ ./javac -verbose MainClass.java
javac: file not found: MainClass.java
Usage: javac <options> <source files>
use -help for a list of possible options

splinter@bastile:~/Downloads$ echo $PATH
/home/splinter/boiler/BUILDROOT/buildroot/output/host/usr/bin/:/home/splinter/INSTALL/qtcreator/bin:/home/splinter/sat/bin:/home/splinter/INSTALL/sqlitestudio:/home/splinter/INSTALL/bochs-2.6/bin:/usr/local/bin:/usr/bin:/bin:/usr/games:/home/splinter/INSTALL/jdk1.7.0_45/bin:/usr/lib/kde4/libexec:/usr/lib/qt/bin:/usr/share/texmf/bin

splinter@bastile:~/Downloads$ eclipse
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_1.1.200.v20120522-1813: невозможно открыть разделяемый объектный файл: Нет такого файла или каталога

# removepkg jre jdk
# EXPLOIT_ME=YES sbopkg -ri jdk

# removepkg jre jdk
# wget http://slackbuilds.org/slackbuilds/14.0/development/jdk.tar.gz
# tar xf jdk.tar.gz
# cd jdk

# ln -s /путь/до/jdk-7u45-linux-i586.tar.gz .
или
# source *.info
# wget $DOWNLOAD или $DOWNLOAD_x86_64

затем
# EXPLOIT_ME=YES ./*Build
# upgradepkg --install-new /tmp/jdk-7u45-*_SBo.t?z

splinter@bastile:~/src/Java/HW$ ls /var/log/packages/ | grep jre\|jdk
splinter@bastile:~/src/Java/HW$ 

ls /var/log/packages/ | grep "jre\|jdk"

# removepkg jre jdk
# upgradepkg --install-new /tmp/jdk-7u45-i586-1_SBo.t?z

релогин обязателен

$ cat <<EOF >HelloWorld.java
public class HelloWorld {
  public static void main(String[] args) {
    System.out.println("Здравствуй, мир!");
  }
}
EOF
$ javac HelloWorld.java
$ java HelloWorld
Здравствуй, мир!

splinter@bastile:~/Downloads$ cat <<EOF >HelloWorld.java
> public class HelloWorld {
>   public static void main(String[] args) {
>     System.out.println("Здравствуй, мир!");
>   }
> }
> EOF
splinter@bastile:~/Downloads$ javac HelloWorld.java
splinter@bastile:~/Downloads$ java HelloWorld
Здравствуй, мир!
splinter@bastile:~/Downloads$ eclipse
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_1.1.200.v20120522-1813: невозможно открыть разделяемый объектный файл: Нет такого файла или каталога

$ cd /tmp; wget http://mirror.tspu.ru/eclipse/technology/epp/downloads/release/kepler/SR1/eclipse-cpp-kepler-SR1-linux-gtk.tar.gz
# cd /opt; tar xf /tmp/eclipse-cpp-kepler-SR1-linux-gtk.tar.gz
$ /opt/eclipse/eclipse
$

public class HelloWorld {
  public static void main(String[] args) {
    System.out.println("Здравствуй, мир!");
  }
}

javac hw.java

splinter@bastile:~/Downloads/webkitgtk$ ls /var/log/packages/ | grep -i webkit
kwebkitpart-1.3.2-i486-1
webkitgtk-1.8.3-i486-1_SBo