Java Basic - Konsep HashMap di Java
class Basic_HashMap { public static void main(String[]args){ ArrayList<HashMap> data = new ArrayList<>(); HashMap<String, String> hash; hash = new HashMap<>(); hash.put("nim", "10510269"); hash.put("nama", "Ardiansyah"); hash.put("jurusan", "Sistem Informasi"); data.add(hash); System.out.println("Nim : " + data.get(0).get("nim")); System.out.println("Nama : " + data.get(0).get("nama")); System.out.println("Jurusan : " + data.get(0).get("jurusan")); System.out.println("data ke[0] : " + data.get(0)); hash.put("nim", "10510260"); hash.put("nama", "Wiro Sableng"); hash.put("jurusan", "Teknik Bela Diri"); data.add(hash); System.out.println("data ke[1] : " + data.get(1)); /* Nim : 10510269 Nama : Ardiansyah Jurusan : Sistem Informasi data ke[0] : {jurusan=sistem informasi, nama=Ardiansyah, nim=10510269} data ke[1] : {jurusan=Teknik Bela Diri, nama=Wiro Sableng, nim=10510260} */ } }