import java.util.ArrayList;
import java.util.List;
public class ContohArrayList2 {
public static void main(String[] args) {
ArrayList<Mahasiswa> mahasiswa = new ArrayList<>();
// menambah elemen
// 1. buat objeknya dulu
Mahasiswa mhs = new Mahasiswa();
mhs.setNim("112233");
mhs.setNama("Adi Putra");
Mahasiswa mhs2 = new Mahasiswa();
mhs2.setNim("223344");
mhs2.setNama("Budi Santoso");
// 2. memasukkan objek ke arraylist
mahasiswa.addAll(List.of(mhs, mhs2));
// mengambil elemen (mhs2)
Mahasiswa objek = mahasiswa.get(0);
System.out.println(objek.getNim());
System.out.println(objek.getNama());
System.out.println();
Mahasiswa objek2 = mahasiswa.get(1);
System.out.println(objek2.getNim());
System.out.println(objek2.getNama());
System.out.println("----------");
for (int i=0; i<mahasiswa.size(); i++) {
Mahasiswa m = mahasiswa.get(i);
System.out.println(m.getNim());
}
// ubah elemen
Mahasiswa mhsBaru = new Mahasiswa();
mhsBaru.setNim("555555");
mhsBaru.setNama("Cindy");
mahasiswa.set(1, mhsBaru);
System.out.println("----------");
for (int i=0; i<mahasiswa.size(); i++) {
Mahasiswa m = mahasiswa.get(i);
System.out.println(m.getNama());
}
// hapus elemen
mahasiswa.remove(1);
System.out.println("----------");
for (int i=0; i<mahasiswa.size(); i++) {
Mahasiswa m = mahasiswa.get(i);
System.out.println(m.getNama());
}
}
}
class Mahasiswa {
private String nim, nama;
public String getNim() {
return nim;
}
public void setNim(String nim) {
this.nim = nim;
}
public String getNama() {
return nama;
}
public void setNama(String nama) {
this.nama = nama;
}
}
