Let’s look at the simple Java code in the following snippet: public class Main { private int temp() { return true ? null : 0; // No compiler error – the compiler allows a return value of null // in a method signature that returns an int. } private int same() { if (true) { … Read more
I know that if you compare a boxed primitive Integer with a constant such as: Integer a = 4; if (a < 5) a will automatically be unboxed and the comparison will work. However, what happens when you are comparing two boxed Integers and want to compare either equality or less than/greater than? Integer a … Read more
How do I convert int[] into List<Integer> in Java? Of course, I’m interested in any other answer than doing it in a loop, item by item. But if there’s no other answer, I’ll pick that one as the best to show the fact that this functionality is not part of Java. 20 s 20 Streams … Read more
I know that if you compare a boxed primitive Integer with a constant such as: Integer a = 4; if (a < 5) a will automatically be unboxed and the comparison will work. However, what happens when you are comparing two boxed Integers and want to compare either equality or less than/greater than? Integer a = 4; Integer … Read more
