USING JAVA Modify the code to use Arraylist Instead of Hashmap
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USING JAVA Modify the code to use Arraylist Instead of Hashmap
CODE:
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
class Student {
private String name;
private List<String> certificates;
public Student(String name) {
this.name = name;
this.certificates = new ArrayList<>();
}
public void addCertificate(String certificate) {
certificates.add(certificate);
}
public boolean hasCertificate(String certificate) {
return certificates.contains(certificate);
}
public String getName() {
return name;
}
}
public class CertificateManagement {
public static void main(String[] args) {
Map<String, Student> students = new HashMap<>();
Student student1 = new Student("John");
student1.addCertificate("Java");
student1.addCertificate("Python");
students.put("John", student1);
Student student2 = new Student("Alice");
student2.addCertificate("C++");
students.put("Alice", student2);
Student student3 = new Student("Emma");
student3.addCertificate("Java");
students.put("Emma", student3);
//CHANGE FOR WHEN YOU SEARCH FOR STUDENT AS INSTRUCTED
String targetCertificate = "Java";
List<String> studentsWithCertificate = new ArrayList<>();
for (Student student : students.values()) {
if (student.hasCertificate(targetCertificate)) {
studentsWithCertificate.add(student.getName());
}
}
System.out.println("Students with " + targetCertificate + " certificate:");
for (String name : studentsWithCertificate) {
System.out.println(name);
}
}
}
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