Problem Description:

I wanna build GData source code under Eclipse which contrains creating type-specific map codes, the Eclipse IDE will complain something like that:? Syntax error, parameterized types are only available if source level is 5.0

Reason:

The new feature to create a type-specific map can only be supported at source level 5.0

Solution:

Do some IDE compiler configuration:
Window > Preferences > Java > Compiler > Compiler compliance level => 5.0

Note:
1. type-specific map:? create a map that will hold only objects of a certain type
??? example:

Map<Integer, String> map = new HashMap<Integer, String>();

    map.put(1, "first");
    map.put(2, "second");

2. if source level 5.0 is applied, Type-safe problem should be noticed for collection data type, such as Vector, List, Stack or Map etc.
that means, you can write code under level 1.4 like this:

private Vector MyList = new Vector();
...
MyList.add(str);

you'd better change to some stuff like this under level 5.0:

private Vector<String> MyList = new Vector<String>();