Thread: Sorting and comparing errors.

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Main File

public class Main {
 
    public static void main(String[] args){
         LibraryLab5 t = new LibraryLab5();
         LibraryLab5 p = new LibraryLab5();
         System.out.println("T: " + t.toString());
         System.out.println("t2: " + t.toString());
         System.out.println("T3: " + t.toString());
         LibraryLab5 []list = Time.getRandomArrayofTimes();
         Time.printArrayofTimes(list);
         System.out.println();
         LibraryLab5 [] tArray = Time.getRandomArrayofTimes();
         Time.displayArrayToScreen(tArray);
         Time.doFillArray();
        LibraryLab5.quickSort();
         Time.printArrayofTimes(tArray);
         System.out.println();
          if(list.compareTo(tArray) > 0)
            System.out.println("t is Greater");
        else if(list.compareTo(tArray) < 0)
            System.out.println("t is smaller");
        else
            System.out.println("They are the same");
 
 
}
 
}

Time File

import java.util.*;
public class Time{
    public LibraryLab5 pink;
     static int tArray;
    public static LibraryLab5 [] getRandomArrayofTimes(){
    LibraryLab5 [] tArray = new LibraryLab5 [10];
        Random rand = new Random(System.currentTimeMillis());
        for(int i = 0; i < 10; i++){
            int k = rand.nextInt(999999999);
             LibraryLab5 pink = new LibraryLab5(k);
            tArray[i] = pink;
        }
        return tArray;
    }
     public static int[] doFillArray() {
        int[] list = new int [12];
        Random rand = new Random(System.currentTimeMillis());
        for (int i = 0; i < 12; ++i) {
            int k = rand.nextInt(999999999);
        }
        return list;
    }
 
 public static <E> void displayArrayToScreen(E [] displayArray){
        System.out.println("The array contents are: ");
        for(int i = 0; i < displayArray.length; ++i ){
            System.out.println(displayArray[i]);
        }
}
    public static void printArrayofTimes(LibraryLab5[] Array){
        for(int i = 0; i < Array.length; i++){
            System.out.println("Random Array: " + i + Array[i]);
        }
    }
}

My Library

import java.util.Random;
import java.util.*;
public class LibraryLab5{ //implements Comparable
    private int minute;
    private int second;
    private int hour;
    public LibraryLab5(){
        this(System.currentTimeMillis());
    }
    public LibraryLab5(long elaspedTime)
    {
        long totalSeconds = elaspedTime / 1000L;
      this.second = (int)(totalSeconds % 60L);
      long totalMinutes = totalSeconds / 60L;
      this.minute = (int)(totalMinutes % 60L);
      int totalHours = (int)(totalMinutes/ 60L);
      this.hour = (totalHours % 24);
    }
    //muators
   public long getSeconds(){
       return second;
   }
   public long getMinutes(){
       return minute;
   }
   public long getHours(){
       return hour;
   }
    public static void quickSort(int [] Array){
       quickSort(Array, 0, Array.length - 1);
    }
    private static void quickSort(int [] Array, int first, int last){
            if(last > first){
        int pivotIndex = partition(Array, first, last);
        quickSort(Array, first, pivotIndex - 1);
        quickSort(Array, pivotIndex + 1, last );
        }
    }
private static int partition(int [] list, int first, int last){
    int pivot = list[first];
    int low = first + 1;
    int high = last;
    while(high > low){
        while(low <= high && list[low] <= pivot)
            low++;
            while(low <= high && list[high] > pivot)
            high--;
                if(high > low){
            int temp = list[high];
            list[high] = list[low];
            list[low] = temp;
}
    }
    while(high > first && list[high]>= pivot)
        high--;
    if(pivot > list[high]){
        list[first] = list[high];
        list[high] = pivot;
        return high;
    }
    else{
        return first;
    }
}
 
   public void displayTime(long totalHours, long totalMinutes, long totalSeconds){
         for(int i = 0; i < totalHours; i++){
             for(int j = 0; j< totalMinutes; j++){
                 for(int k = 0; k < totalSeconds; k++){
                 }
                 System.out.print(hour + minute + second);
             }
             System.out.println();
         }
     }
   public double sumOfSquares(){
        double  sum = 0;
        for(int i = 0; i < hour ; i++){
            for(int j = 0; j < second; j++){
                for(int g = 0; g < minute; g++) {
 
            sum += hour * minute * second;
        }
        }
 
       }
        return sum;
    }
 
 
   public int compareTo(Object M){
        //read compareTo method in text
        if(sumOfSquares() > ((LibraryLab5)M).sumOfSquares())
        return 1;
        else if(sumOfSquares() < ((LibraryLab5)M).sumOfSquares())
            return -1;
        else
            return 0;
    }
 
 
 
 
     public String toString(){
         String s;
         s = hour + " : " + minute + ": " + second + " GMT";
         return s;
     }
}

What I am trying to do is compare the random array of times, and sort it... but it's giving me errors, please help me.

run:
T: 0 : 46: 3 GMT
t2: 0 : 46: 3 GMT
T3: 0 : 46: 3 GMT
Random Array: 09 : 38: 16 GMT
Random Array: 12 : 59: 39 GMT
Random Array: 211 : 42: 1 GMT
Random Array: 312 : 4: 32 GMT
Random Array: 423 : 6: 4 GMT
Random Array: 510 : 17: 37 GMT
Random Array: 614 : 5: 25 GMT
Random Array: 70 : 34: 8 GMT
Random Array: 80 : 37: 56 GMT
Exception in thread "main" java.lang.RuntimeException: Uncompilable source code
Random Array: 914 : 24: 42 GMT
 
The array contents are: 
9 : 38: 16 GMT
2 : 59: 39 GMT
11 : 42: 1 GMT
12 : 4: 32 GMT
23 : 6: 4 GMT
10 : 17: 37 GMT
14 : 5: 25 GMT
0 : 34: 8 GMT
0 : 37: 56 GMT
14 : 24: 42 GMT
        at Main.main(Main.java:24)
Java Result: 1
BUILD SUCCESSFUL (total time: 1 second)

That the error i get, and I have to sort these

Can't get the given code to compile.
Issues with:

LibraryLab5.quickSort()
because the method requires a parameter, did you intend for the previous line to be used as a parameter?

list.compareTo(tArray)
list is an array... don't think you can call a class method on an array like this. the comment next to the class definition suggests that it should implement comparable, and to take a look at how to use it in your textbook.

For further reading/examples on comparable: Object Ordering - Oracle Java Tutorials

Hope this helps

I still don't get this.. please help me!