Help with sorting an object array.
Code:
package gestionecd;
import java.io.*;
import java.util.*;
import java.lang.*;
/**
*
* @author Tommy
*/
public class CDmusical {
private String name = "";
private String genre = "";
private Calendar date;
CDmusicale(String name1, String genre1, Calendar date1){
name = name1;
genre = genre1;
date = date1;
}
public String getinfo() {
return name + " " + genre + " " + String.valueOf(date.get(Calendar.DAY_OF_MONTH)) + "/" + String.valueOf(date.get(Calendar.MONTH) + "/" + String.valueOf(date.get(Calendar.YEAR)));
}
public int getyear(){
return date.get(Calendar.YEAR);
}
}
Code:
package gestionecd;
import java.util.*;
public class ordinaarray {
public static void ordinaarray(CDmusical[] array){
CDmusical[] anarray = new CDmusical[array.length];
anarray = array;
for(int i = 1; i <= anarray.length - 1; i++){
System.out.println("Informazioni CD " + i);
System.out.println(anarray[i].getinfo());
}
System.out.println();
System.out.println(" ORDINO ARRAY ");
System.out.println();
Arrays.sort(array);
for(int iz = 1; iz <= anarray.length - 1; iz++){
System.out.println("Informazioni CD " + iz);
System.out.println(anarray[iz].getinfo());
}
}
}
Code:
package gestionecd;
import java.io.*;
import java.util.*;
public class CDtester {
public static void main(String[] args) throws IOException{
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
int n = 0;
String localname = "";
String localgenre = "";
/* INSERIMENTO AUTOMATICO */
CDmusical [] arrayCD = new CDmusical[10];
CDmusical p = new CDmusical("", "", new GregorianCalendar());
arrayCD[1] = new CDmusical("Mutter", "Metal", new GregorianCalendar(2001, 1, 1));
arrayCD[2] = new CDmusical("Herzeleid", "Metal", new GregorianCalendar(1995, 1, 1));
arrayCD[3] = new CDmusical("Reise Reise", "Metal", new GregorianCalendar(2004, 1, 1));
arrayCD[4] = new CDmusical("Rosenrot", "Metal", new GregorianCalendar(2005, 1, 1));
arrayCD[5] = new CDmusical("Sehnsucht", "Metal", new GregorianCalendar(1998, 1, 1));
arrayCD[6] = new CDmusical("The BEst", "Metal", new GregorianCalendar(1955, 1, 1));
arrayCD[7] = new CDmusical("Oohmph", "Metal", new GregorianCalendar(1988, 1, 1));
arrayCD[8] = new CDmusical("Warbringer", "Metal", new GregorianCalendar(1977, 1, 1));
arrayCD[9] = new CDmusical("Warlock", "Metal", new GregorianCalendar(1909, 1, 1));
/* INSERIMENTO MANUALE
System.out.println("Quanti cd vuoi inserire?");
n = Integer.parseInt(in.readLine());
CDmusical [] arrayCD = new CDmusical[n+1];
CDmusical p = new CDmusical("", "", new GregorianCalendar());
for(int i = 1; i <= n; i++){
arrayCD[i] = new CDmusical(localname, localgenre, new GregorianCalendar());
}
for(int i = 1; i <= n; i++){
Calendar localdate1 = new GregorianCalendar();
System.out.println("Informazioni CD " + i + " - Nome?");
localname = in.readLine();
System.out.println("Informazioni CD " + i + " - Genere?");
localgenre = in.readLine();
System.out.println("Informazioni CD " + i + " - Anno, Mese, Giorno pubblicazione?");
localdate1.set(Integer.parseInt(in.readLine()), Integer.parseInt(in.readLine()), Integer.parseInt(in.readLine()));
arrayCD[i] = new CDmusical(localname, localgenre, localdate1);
}
*/
ordinaarray.ordinaarray(arrayCD);
}
}
I wonder how I could sort an object array (made by CDmusical objects) by the date.get(Calendar.YEAR)) method.
I really can't get thru this.
