My first java game

Question

import javax.swing.*;
import java.util.Random;
public class Cards extends Object{
     String cards[] = new String[53];
     Random rand = new Random();
     //constructor
     public Cards()
     public void clearitout () {
          for(int index=1;index<=cards.length;index++)
               cards[index]=("unused");
     public void deal () {
          int cardsdelt=0;
          int index=0;
          while(cardsdelt<=5)
               if (cards[index]=="unused")
                    cards[index]="used";
i have no clue what to do i just want to get a random number and check to see if itsd not already played

Answer 1

i had some help from one of my friends... but i got 2 loos of precision errors on the methods identifysuit&identifycard
import javax.swing.*;
import java.util.Random;
public class Cards extends Object{
String cards[] = new String[53];
String cardnames[] = {"ace","two","three","four","five","six","seven","eight","nine","ten","jack","queen","king"};
String suitnames[] = {"spades","hearts","clubs","diamonds"};
Random rand = new Random();
//constructor
public Cards()
public void clearitout () {
for(int index=1;index<=cards.length-1;index++)
cards[index]=("unused");
public void deal () {
int cardsdelt=0;
int index;
while(cardsdelt<=5)
index=(rand.nextInt(52)+1);
if (cards[index]=="unused")
cards[index]="used";
System.out.println(cardnames[identifycard(index)] + " of " + suitnames[identifysuit(index)]);
cardsdelt++;
private int identifysuit(int index) {
int suit=0;
suit = Math.floor(index+13)/13;
return suit;
private int identifycard (int index) {
int card=0;
card = (((((index+12)/13) - Math.floor(index+12)/13) *13) + 1);
return card;