public class Main { public static void main(String[] args) { Integer a = 127; Integer b = 127; Integer c = 128; Integer d = 128; System.out.println(a == b); System.out.println(c == d); } } package main import "fmt" func main() { x := 1 defer func() { fmt.Println("defer:", x) }() x = 2 fmt.Println("now:", x) }

In Java:

Integer a = 127;
Integer b = 127;
Integer c = 128;
Integer d = 128;

System.out.println(a == b); // true
System.out.println(c == d); // false

Explanation: Java caches Integer objects in the range from -128 to 127. Therefore, a and b refer to the same object, and the == comparison returns true. For values outside this range, new objects are created, so c == d is false.

In Go:

package main

import "fmt"

func main() {
    x := 1
    defer func() { fmt.Println("defer:", x) }()
    x = 2
    fmt.Println("now:", x)
}

The output will be:

now: 2
defer: 2

Explanation: In Go, functions deferred with defer capture variables by reference, not by value. Therefore, when the deferred function executes, the value of x is already 2.