无法在Ubuntu中打开Eclipse 12.04 – java.lang.UnsatisfiedLinkError：无法加载SWT库

我最近安装了Ubuntu 12.04.另外我安装了 Java 7.我尝试安装eclipse-java-indigo-SR2-linux-gtk.tar.gz.我在/ home / ramprabhu位置提取了这个文件.然后我尝试运行eclipse可执行文件.我看到日志文件时出错.

我的日志文件：

!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)

我不能跑eclipse.如何解决这个问题并运行eclipse.