In code fragment mode, the result of the last evaluated expression is displayed with the whole content of the code fragment field. For fragments that are a little longer this will need a lot of horizontal scrolling before the expression's result can be seen. Either remove the text altogether and only display the result (I already see what has been evaluated in the box above), or, even better, just display the exact expression that was evaluated last (if that's possible to figure out). Another huge improvement would be to treat all variables that are declared in that fragment like local variables and display their values once the fragment has been run. This can be useful e.g. when trying to figure out the return values of a function for different parameter values: String x1 = foo(1); String x2 = foo(2); String x2 = foo(3); Having a stackframe-like display would make it possible to see all those values at one glance without having to build some kind of "result-expression".