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Thread: using an Array list
- 11-18-2007, 09:11 PM #1
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using an Array list
Java Code:public class Course { private String name; private String[] students = new String[100]; private int numberOfStudents; public Course(String name) { this.name = name; } public void addStudent(String student) { students[numberOfStudents] = student; numberOfStudents++; } public String[] getStudents() { return students; } public int getNumberOfStudents() { return numberOfStudents; } public String getName() { return name; } }
Last edited by JavaBean; 11-18-2007 at 09:40 PM.
- 11-18-2007, 10:08 PM #2
Trail: Collections
List Implementations
Java Code:import java.util.*; public class Course { private String name; // An ArrayList grows as you add to it. // Choose one of the following according to the // version of java you are using: // This is for j2se 1.5+ with generics: private List<String> students = new ArrayList<String>(); // Use this for non-generics: j2se 1.4 or earlier: //private List students = new ArrayList(); public Course(String name) { this.name = name; } public void addStudent(String student) { students.add(student); } public String[] getStudents() { int size = getNumberOfStudents(); // Find this method in the ArrayList class api // Methods Summary section. return students.toArray(new String[size]); } public int getNumberOfStudents() { return students.size(); } public String getName() { return name; } }
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