CSE 234, LAB FINAL
MARKS: 100, TIME: 30 MIN
[*Create a folder named after your registration number on the desktop and keep all answer files in there*]
[*All class, method and variable names that are provided should be kept same(case sensitive) as it is.*]
Q1. Write a java class using the following information: 20
public class S {
public static void changeMainThread(int sec, int priority) {
. . .
. . .
}
public static void main (String args[]) {
S.changeMainThread(3, 9);
}
}
OUTPUT:
Current Thread: Thread[main,5,main]
Current Thread: Thread[ExamThread,9,main]
Threading is trying sleeping for 3s...
Sleeping complete!
Q2. Write two java class file using the following information: 35
public abstract class A {
private int ai;
...
...
public int am1() { return ai; }
public abstract void am2(String s); // Prints reversed string.
}
public class B extends A {
private int bi;
...
...
public void bm() {
System.out.println("ai : " + am1() + "\nbi : " + bi);
}
...
...
public static void main(String args[]) {
B b = new B(10,20);
b.bm();
A a = b;
a.am2("APPLE");
}
}
OUTPUT:
ai : 10
bi : 20
ELPPA
Q3. Write two java class file using the following information: 25
interface I {
int fi = 5;
void im(int n);// prints factorial of n
}
public class C extends B implements I {
...
...
...
public static void main(String args[]) {
C c = new C(40,25);
c.bm();
c.am2("Factorial");
c.im(c.fi);
S.changeMainThread(2,8);
}
}
OUTPUT:
ai : 40
bi : 25
lairotcaF
120
Current Thread: Thread[main,5,main]
Current Thread: Thread[ExamThread,9,main]
Threading is trying sleeping for 3s...
Sleeping complete!
Q4. Create packages with the class files from Q1-3 accordingly so that all previous codes works as it should be.
Package folders should be directly under the Registration number directory. Packages: 20
Package Name Class
p1 S
p2 A
B
p3 I
C