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Which of the following are legal lines of Java code?
1. int w = (int)888.8;2. byte x = (byte)100L;3. long y = (byte)100;4. byte z = (byte)100L;
Suppose you are compiling on a machine with 1-byte chars, 2-byte shorts, 4-byte ints, and 8-byte doubles, and with alignment rules that require the address of every primitive data element to be an integer multiple of the element's size. Suppose further that the compiler is not permitted to reorder fields: padding is used to ensure alignment. How much space will be consumed by the following array? struct { short s; char c; short t; char d; double r; int i; } A[10]; /*10-element array of structs*/
Which of these methods of Byte wrapper can be used to obtain Byte object from a string?
With reference to 8085 microprocessor, which of the following statements are correct? 1. INR is 1-byte instruction 2. OUT is 2-byte instruction 3. STA is 3-byte instruction
Which of the following statements regarding static methods are correct?
1. Static methods are difficult to maintain, because you can not change their implementation.
2. Static methods can be called using an object reference to an object of the class in which this method is defined.
3. Static methods are always public, because they are defined at class-level.
4. Static methods do not have direct access to non-static methods which are defined inside the same class.
Consider a fully-associative data cache with 32 blocks of 64 bytes each. The cache uses LRU (Least Recently Used) replacement. Consider the following C code to sum together all of the elements of a 64 by 64 two-dimensional array of 64-bit double-precision floating point numbers. double sum (double A [64] [64] ) { int i, j ; double sum = 0 ; for (i = 0 ; i < 64; i++) for (j = 0; j < 64; j++) sum += A [i] [j] ; return sum ; } Assume all blocks in the cache are initially invalid. How many cache misses will result from the code?
Two stock options are available for buying. Each offers a variable rate of return of profit over a period of 10 years. For first 4 years one has an incremental rate of return which increases by 2% per year starting from 3% of the investment and stays constant at 8% for the rest of the period. The second one has a constant annual rate of return throughout and give 10% more return after 10 years. What is the annual rate of return on second option?
The height of a tree is defined as the number of edges on the longest path in the tree. The function shown in the pseudocode below is invoked as height(root) to compute the height of a binary tree rooted at the tree pointer root. int height (treeptr n) { if (n == NULL) return -1;   if (n →  left == NULL)        if (n →  right == NULL) return 0;        else return ; \(\boxed{B1}\);     // Box 1 else { h1 = height (n →  left);          if (n → right == NULL) return (1+h1);          else { h2 = height (n → right);          return ; \(\boxed{B2}\)   // Box 2                        }            } } The appropriate expressions for the two boxes B1 and B2 are 
interface Base{ boolean m1 (); byte m2(short s);}

which two code fragments will compile?
1. interface Base2 implements Base {}2. abstract class Class2 extends Base { public boolean m1(){ return true; }}3. abstract class Class2 implements Base {}4. abstract class Class2 implements Base { public boolean m1(){ return (7 > 4); }}5. abstract class Class2 implements Base { protected boolean m1(){ return (5 > 7) }}
Pick the correct statements.
I.   The body of a function should have only one return statement.
II.  The body of a function may have many return statements.
III. A function can return only one value to the calling environment.
IV. If return statement is omitted, then the function does its job but returns no value to the calling environment.