help me up plz

import java.util.*;
class MyComp implements Comparator
{
public int compare(Object o1 ,Object o2)
{
Temp t1 = (Temp)o1;
Temp t2 = (Temp)o2;
if(t1.salary>t2.salary)
return 1;
elseif(t1.salary<t2.salary)
return -1;
else
return 0;
}
public static void main(String...s)
{
Comparator m = new MyComp();
TreeSet ts = new TreeSet(m);
ts.add(new Temp(10));
ts.add(new Temp(20));
ts.add(new Temp(30));
Iterator i = ts.iterator();
while(i.hasNext())
{
Temp t = (Temp)i.next();
System.out.println(t.salary);
}
}
}
class Temp
{
int salary;
Temp(int salary)
{
this.salary = salary;
}
}

i am beginner in java
if there is any silly mistake please forgive me..
and if possible then plz tell me
" when we should make new classes in multiclasses program " !!

help me plz

to understand you problem.Please specify your problem.
How to ask Questions Smartly

I'm astonished that you actually expected good quality answers by just pasting your code without an ounce of detail specifying what your issue is.

For anyone willing to investigate further, here's the code in a readable format:

Code java:

---

import java.util.Comparator;
import java.util.Iterator;
import java.util.TreeSet;
 
public class MyComp implements Comparator {
 
    public int compare(Object o1, Object o2) {
        Temp t1 = (Temp) o1;
        Temp t2 = (Temp) o2;
        if (t1.salary > t2.salary) {
            return 1;
        } else if (t1.salary < t2.salary) {
            return -1;
        } else {
            return 0;
        }
    }
 
    public static void main(String... s) {
        Comparator m = new MyComp();
        TreeSet ts = new TreeSet(m);
        ts.add(new Temp(10));
        ts.add(new Temp(20));
        ts.add(new Temp(30));
        Iterator i = ts.iterator();
        while (i.hasNext()) {
            Temp t = (Temp) i.next();
            System.out.println(t.salary);
        }
    }
}
 
class Temp {
    int salary;
    Temp(int salary) {
        this.salary = salary;
    }
}

---

And for the record, Code I just pasted is working, by adding parenthesis and adding a space to else if.

i am sorry for not explaining my question .. i posted in hurry ..btw i got solution
thnx newbie .......//