1z0-809: Java SE 8 Programmer II Fragment Practice Questions

Given the code fragment: Which code fragment, when inserted at line 7, enables printing 100?

• AA. Function<Integer> funRef = e –> e + 10; Integer result = funRef.apply(value);
• BB. IntFunction funRef = e –> e + 10; Integer result = funRef.apply (10);
• CC. ToIntFunction<Integer> funRef = e –> e + 10;int result = funRef.applyAsInt (value);
• DD. ToIntFunction funRef = e –> e + 10; int result = funRef.apply (value);

Given the code fragment: Path p1 = Paths.get(“/Pics/MyPic.jpeg”); System.out.println (p1.getNameCount() + “:” + p1.getName(1) + “:” + p1.getFileName()); Assume that the Pics directory does NOT exist. What is the result?

• AA. An exception is thrown at run time.
• BB. 2:MyPic.jpeg: MyPic.jpeg
• CC. 1:Pics:/Pics/ MyPic.jpeg
• DD. 2:Pics: MyPic.jpeg

Given the code fragment: Which code fragment, when inserted at line n1, ensures false is printed?

• AA. boolean b = cs.stream() .findAny() .get() .equals(“Java”);
• BB. boolean b = cs.stream() .anyMatch (w -> w.equals (“Java”));
• CC. boolean b = cs.stream() .findFirst() .get() .equals(“Java”);
• DD. boolean b = cs.stream() .allMatch(w -> w.equals(“Java”));

Given the code fragment: What is the result?

• AA. A compilation error occurs at line n2.
• BB. 3
• CC. 2
• DD. A compilation error occurs at line n1.