Question

Okay guys,I need to solve this problem using minimum if else condition.Let me explain my problem.
Suppose there are three String city,state and country.I need to print it in following format

city,state,country

In case if city=”” then it needs to be

state,country

In case if state=”” the it needs to be

 city,country

if country=”” then

city,state

if all string are”” then nothing should be printed or just a “”.
and every other possible conditions.Those three strings may have value or may contain “” not null.So using least if else condition i need to solve this problem.
Note:Not a homework.

Answer 1

StringBuilder sb = new StringBuilder ();
for (String s: new String [] {city, state, country})
{
    if (!s.isEmpty ())
    {
        if (sb.length () > 0) sb.append (",");
        sb.append (s);
    }
}
System.out.println (sb);