In Java, incrementing a variable by one can be done in several ways: n++ , n = n + 1 , and n += 1 . While these expressions achieve the same end result, they differ slightly in syntax and use cases. Let's explore each one and discuss their performance. 1. n++ Post-Increment Operator : Increments the value of n by 1 after its current value has been used. Common Usage : Typically used in loops and other contexts where the current value needs to be used before incrementing. int n = 5; n++; // n is now 6 2. n = n + 1 Addition Assignment : Explicitly sets n to its current value plus 1. Readability : Straightforward and clear, though slightly more verbose. int n = 5; n = n + 1; // n is now 6 3. n += 1 Compound Assignment Operator : Equivalent to n = n + 1 , but more concise. Usage : Combines addition and assignment into one step. int n = 5; n += 1; // n is...