Problem 1 : Insert code in the given code segments to make the loop infinite.
It looks as though it should run for only two iterations, but it can be made to loop indefinitely by taking advantage of the overflow behavior.
Integer.MAX_VALUE is the maximum value that an int can store in Java. When i gets to Integer.MAX_VALUE and is incremented, it silently wraps around to Integer.MIN_VALUE. So, we can declare variable start with 1 less than maximum value.
Following is the solution:
In this, start=2147483645 (Integer.MAX_VALUE-1), and the value goes like 2147483645, 2147483646, -2147483648, -2147483647…….. and so on.
Problem 2 Insert code in the given code segments to make the loop infinite.
Until release 5.0, Java’s numerical comparison operators (=) required both of their operands to be of a primitive numeric type (byte, char, short, int, long, float, or double). In release 5.0, the specification was changed to say that the type of each operand must be convertible to a primitive numeric type. Therein lies the rub.
In release 5.0, autoboxing and auto-unboxing were added to the language. We are using this in the following :
The first two subexpressions (i <= j and j <= i) perform unboxing conversions on i and j and compare the resulting int values numerically. Both i and j represent 0, so both of these subexpressions evaluate to true. The third subexpression (i != j) performs an identity comparison on the object references i and j. The two variables refer to distinct objects, as each was initialized to a new Integer instance. Therefore, the third subexpression also evaluates to true, and the loop spins forever.
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