well.. back in its day, eclipse was actually ahead of its time. A usable refactoring tools, incremental compilation, edit/replace method while the program is r

well.. back in its day, eclipse was actually ahead of its time. A usable refactoring tools, incremental compilation, edit/replace method while the program is running, run program with syntax error (as long as you don't hit that line), etc... To support all these feature, they have written their own java compiler. Overtime, it get bloated and collapse over its weight.