Type java -version and see if it says you are running x86 (32bit) or 64 bit java.
If you are running 64 bit Java, you need to re-download the 64 bit version of Eclipse. Your error shows -arch x86 (meaning it wants a 32 bit OS/Java)
Why don't you use the Eclipse from the software center? It's much easier to install. You are, however, more than welcome to install from source, or a downloaded deb :)
Type
java -version
and see if it says you are running x86 (32bit) or 64 bit java.If you are running 64 bit Java, you need to re-download the 64 bit version of Eclipse. Your error shows -arch x86 (meaning it wants a 32 bit OS/Java)
Why don't you use the Eclipse from the software center? It's much easier to install. You are, however, more than welcome to install from source, or a downloaded deb :)