Невозможно открыть Eclipse в Ubuntu 12.04 - java.lang.UnsatisfiedLinkError: не удалось загрузить библиотеку SWT

Я недавно установил Ubuntu 12.04. Также я установил Java 7. Я пытаюсь установить eclipse-java-indigo-SR2-linux-gtk.tar.gz. Я извлек этот файл в /home/ramprabhu location. Затем я пытаюсь запустить исполняемый файл eclipse. Я получил ошибку, увидев файл журнала.

Мой файл журнала:

 !SESSION 2012-06-10 22:47:35.959 -----------------------------------------------
eclipse.buildId=M20120208-0800
java.version=1.7.0_04
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.java.product
Command-line arguments:  -os linux -ws gtk -arch x86 -product org.eclipse.epp.package.java.product

!ENTRY org.eclipse.osgi 4 0 2012-06-10 22:47:36.757
!MESSAGE Application error
!STACK 1
java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons: 
    /home/ramprabhu/eclipse/configuration/org.eclipse.osgi/bundles/247/1/.cp/libswt-pi-gtk-3740.so: libXtst.so.6: cannot open shared object file: No such file or directory
    no swt-pi-gtk in java.library.path
    /home/ramprabhu/.swt/lib/linux/x86/libswt-pi-gtk-3740.so: /home/ramprabhu/.swt/lib/linux/x86/libswt-pi-gtk-3740.so: wrong ELF class: ELFCLASS64 (Possible cause: architecture word width mismatch)
    Can't load library: /home/ramprabhu/.swt/lib/linux/x86/libswt-pi-gtk.so

    at org.eclipse.swt.internal.Library.loadLibrary(Library.java:285)
    at org.eclipse.swt.internal.Library.loadLibrary(Library.java:194)
    at org.eclipse.swt.internal.gtk.OS.<clinit>(OS.java:22)
    at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:63)
    at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:54)
    at org.eclipse.swt.widgets.Display.<clinit>(Display.java:132)
    at org.eclipse.ui.internal.Workbench.createDisplay(Workbench.java:695)
    at org.eclipse.ui.PlatformUI.createDisplay(PlatformUI.java:161)
    at org.eclipse.ui.internal.ide.application.IDEApplication.createDisplay(IDEApplication.java:153)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:95)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

Я не могу запустить eclipse. Как решить эту проблему и запустить eclipse.