Show the output of the following code:(a)public class Test {public static void main(String...

Show the output of the following code:

(a)
public class Test {
public static void main(String[] args) {
int[] a = {1, 2};
swap(a[0], a[1]);
System.out.println("a[0] = " + a[0]
+ " a[1] = " + a[1]);
}
public static void swap(int n1, int n2) {
int temp = n1;
n1 = n2;
n2 = temp;
}
}

(b)
public class Test {
public static void main(String[] args) {
int[] a = {1, 2};
swap(a);
System.out.println("a[0] = " + a[0]
+ " a[1] = " + a[1]);
}
public static void swap(int[] a) {
int temp = a[0];
a[0] = a[1];
a[1] = temp;
}
}

(c)
public class Test {
public static void main(String[] args) {
T t = new T();
swap(t);
System.out.println("e1 = " + t.e1
+ " e2 = " + t.e2);
}
public static void swap(T t) {
int temp = t.e1;
t.e1 = t.e2;
t.e2 = temp;
}
}
class T {
int e1 = 1;
int e2 = 2;
}

(d)
public class Test {
public static void main(String[] args) {
T t1 = new T();
T t2 = new T();
System.out.println("t1's i = " +
t1.i + " and j = " + t1.j);
System.out.println("t2's i = " +
t2.i + " and j = " + t2.j);
}
}
class T {
static int i = 0;
int j = 0;
T() {
i++;
j = 1;
}
}