sort arraylist of objects by field

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https://www.youtube.com/watch?v=wzWFQTLn8hIjh

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public void sort()
{
Collections.sort(createEmployee, new Comparator<Employee>() 
{
public int compare(Employee E1, Employee E2)
{
return Integer.valueOf(E2.salary).compareTo(E1.salary);
}
});

for(int i =0 ; i<= createEmployee.size()-1;i++)
{
Employee e = createEmployee.get(i);
System.out.println(employeeName(e) + "  have salary " + e.salary);
}
}

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