CONTOH PEMOGRAMAN JAVA ECLIPSE

package perpustakaan;

public class Mahasiswa {
String nama, NIM, phone, indeks;
int nilai;

public static void main(String[] args) {
Mahasiswa anton = new Mahasiswa();
anton.nilai = 60;
anton.getIndex();
System.out.print("Anton mendapatkan Index "+anton.indeks);

Mahasiswa cici = anton;
cici.nilai = 90;
cici.getIndex();
System.out.print("\nCici mendapatkan Index "+cici.indeks);
}

public void setNilai(int nilai) {
this.nilai = nilai;
}

public void getIndex() {
int nilai = this.nilai;
if (nilai > 80) {
this.indeks = "A";
}else if (nilai > 70) {
this.indeks = "B";
}else{
this.indeks = "C";
}
}
}