Download Fast Track to Sun Certified Java Program by Ka Iok Tong PDF

By Ka Iok Tong

If you want to benefit the hot good points in Java SE 5.0 and go the sunlight qualified Java Programmer improve examination (CX-310-056), then this publication is for you. It covers all of the Java SE 5.0 new positive aspects required within the examination. you do not need to examine the prevailing beneficial properties that you simply already be aware of. 117 evaluate questions and ridicule examination questions are included.
It comprises the subsequent chapters: Autoboxing, Generics, For-each loop, Manipulating Collections, Variable Arity Parameters, Enum, Static Imports, Covariant go back varieties, Java I/O, Formatting and Parsing, getting ready for the examination.

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C. toArray() will return an Object[] which is not an Integer[]. 4. c. The List converted from an array is fixed in size.

If it returns -0, then it is just 0. Then you can't tell whether it is found at index 0 or not found and should be inserted at index 0. So, after negating the index (2=>-2, 0=>-0), it will always minus 1 from it (2=>-3, 0=>-1) so that the return values for all not-found cases will be strictly negative. Manipulating Collections 57 To make use of this return value, do something like this: ... binarySearch(list, "f"); if (idx >= 0) { //found ... } else { //not found int insertIdx = -(idx+1); //add 1 to undo the -1.

Assuming the same Shape and Rect classes as above, what is true about the following code? 1. 2. 3. add(sh); a. There will be a compilation error at line 1. b. There will be a compilation error at line 2. c. There will be a compilation error at line 3. d. It will compile and run just fine. Assuming the same Shape and Rect classes as above, in order to write a method that draws all the Shapes (could also be Rect objects) in a Collection, what should you fill in the blank? 1. 2. 3. void drawAll(Collection<_________> c) { ...

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