I would like my method public void showClassRoomDetails(String teacherName) to return the Arraylist index number using the teacherName.

Thanks

    import java.util.ArrayList;

public class School
{
private ArrayList<Classroom> classrooms;
private String classRoomName;
private String teacherName;

public School()
{
    classrooms =  new ArrayList<Classroom>();
}

public void addClassRoom(Classroom newClassRoom, String theClassRoomName)
{
    classrooms.add(newClassRoom);
    classRoomName = theClassRoomName;
}

public void addTeacherToClassRoom(int classroomId, String TeacherName)
{
    if (classroomId < classrooms.size() ) {
        classrooms.get(classroomId).setTeacherName(TeacherName);
    }
}

public void showClassRoomDetails(String teacherName)
{
    for (Classroom classroom : this.classrooms)
    {
        if (classroom.returnTeacherName().equals(teacherName))
        {
            System.out.println(classroom.returnClassRoomName());
            System.out.println(classroom.returnTeacherName());   
            break;
        }
    } 
}


}