Java print a list without minimum and maximum value

As it stands right now, you program won't work...

public class Person {
    static String name;
    static String lname;
    static double age;

    Person(String name,string lname,double age) {
        Person.name = name;
        Person.lname= lname;
        Person.age = age;  
    }
}

The use of static means that, based on your example, all your entries will named Foo scientist and will be age 12

Start by removing the static references...

public class Person {

    String name;
    String lname;
    double age;

    Person(String name,string lname,double age) {
        this.name = name;
        this.lname= lname;
        this.age = age;  
    }
}

Next, you could sort the list...

Collections.sort(persons, new Comparator<Person>() {
    public int compare(Person p1, Person p2) {
        return Double.compare(p1.age, p2.age);
    }
});

Then simply excluding the first and last entries...

for (int index = 1; index < persons.size() - 2; index++) {
    Person p = persons.get(index);
    System.out.println(p.name + " " + p.lname + " @ " + p.age);
}

For example...

The next problem will be, what happens if you have more then one entry with the minimum or maximum age??

After you've sorted the list, start by getting the lower and upper ranges...

int minAge = person.get(0).age;
int maxAge = person.get(person.size() - 1).age;

Then filter out those elements that don't meet the age boundries...

List<Person> withInLimites = new ArrayList<Person>(persons.size());
for (Person p : persons) {
    if (p.age > minAge && p.age < maxAge) {
        withInLimites.add(p);
    }
}

for (Person p : withInLimites) {
    System.out.println(p.name + " " + p.lname + " @ " + p.age);
}

Ignoring the possibility of ties, you can do this by traversing the list twice. The first time to find the minimum and maximum ages and the second time to do the printing:

public class Person {
    String name;
    String lname;
    double age;

    Person(String name, String lname, double age) {
        this.name = name;
        this.lname= lname;
        this.age = age;  
    }
}

public void testQuestionInput() {
    List<Person> persons = new ArrayList<Person>();
    persons.add(new Person("Foo", "scientist",5));
    persons.add(new Person("Foo", "scientist",4));
    persons.add(new Person("Foo", "teacher",10));
    persons.add(new Person("Bar", "student",11));
    persons.add(new Person("Foo", "scientist",12));
    double maxAge = Double.NEGATIVE_INFINITY;
    double minAge = Double.POSITIVE_INFINITY;
    for (Person person : _persons) {
        minAge = Math.min(minAge, person.age);
        maxAge = Math.max(maxAge, person.age);
    }
    for (Person person : _persons) {
        if (person.age != minAge && person.age != maxAge) {
            System.out.printf("%1$s, %2$s, %3$f%n",
               person.name, person.lname, person.age);
        }
    }
}

You would probably need to define a toString() method in class Person to get meaningful output from System.out.print(person) like you have in your current code.

Your program must be like this:

import java.awt.List;
import java.util.ArrayList;

public class Person {
    static String name;
    static String lname;
    static double age;

    Person(String name, String lname, double age) {
        Person.name = name;
        Person.lname = lname;
        Person.age = age;

    }

    // Main method

    public void testQuestionInput() {
        ArrayList<Person> persons = new ArrayList<Person>();
        persons.add(new Person("Foo", "scientist", 5));
        persons.add(new Person("Foo", "scientist", 4));
        persons.add(new Person("Foo", "teacher", 10));
        persons.add(new Person("Bar", "student", 11));
        persons.add(new Person("Foo", "scientist", 12));
        for (Person person : persons) {

            System.out.print(person);
        }
    }
}