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.
This article is contributed by Shubham Juneja. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to firstname.lastname@example.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.
- Generate Infinite Stream of Integers in Java
- Generate Infinite Stream of Double in Java
- For-each loop in Java
- How to loop over TreeSet in Java
- Java For loop with Examples
- Java while loop with Examples
- Difference between while and do-while loop in C, C++, Java
- Java do-while loop with Examples
- For Loop in Java | Important points
- Output of Java Programs | Set 40 (for loop)
- Output of Java Programs | Set 36 (do-while loop)
- Flatten a Stream of Map in Java using forEach loop
- Flatten a Stream of Arrays in Java using forEach loop
- Flatten a Stream of Lists in Java using forEach loop
- foreach() loop vs Stream foreach() vs Parallel Stream foreach()