Need help for type Comparable

Question

Hey guys this is my first post thanks for helping!
Ok these are the codes that I wrote to store Int into the array
then compare each input with the element of the array and put them in accending order. NOW, I want the very same code to Compare type Integer, Double, and String. But I'm stuck, I'm having trouble changing to type Comparable and the using the compareTo method provide by Java. Here is the privimative type
import java.io.*;
import java.util.*;
public class SortedVectorDriver {
     public static void main(String[] args) throws Exception {
     SortedVectors a = new SortedVectors (5);
     a.getInput();
import java.io.*;
import java.util.*;
public class SortedVectors{
     private int [] Num;//=new int [size] ;;
     private int size,smallest,largest,choice,Number,tempSpot,top;
     final static int increment = 4;
     final static int orSize = 5;     
     private String s;
     private boolean goodData;     
     public SortedVectors (int size) {
          this.size = size;
          Num=new int [this.size] ;
          this.top=0;
          //this.increment = 4;     
     public int getChoice () {
          return choice;          
     public int getNumber () {
          return Number;
     private void callOneTwo () {
          if ( choice == 1 )
               insert (getNumber());     
          else if ( choice == 2)
               delete (getNumber());
     private void callOther () {
          if ( choice == 3)
               smallest ();     
          else if ( choice == 4)
               largest();
          else if ( choice == 5)
               clear ();
     private void readChoice () throws IOException {
          int temp=0;
          goodData = false;
          BufferedReader br = new BufferedReader (new InputStreamReader (System.in));
          System.out.print ("Checking Choice : ");     
          s = br.readLine ();
          while ( (!goodData) ) {
               goodData = true;     
               try {     
                    this.choice = Integer.parseInt(s);
               catch (NumberFormatException e) {
                    goodData = false;
                    System.out.print ("PLEASE RE-ENTER CHOICE : ");
                    s = br.readLine();
                    //choice = Integer.parseInt(s);
          System.out.println("Return goodData");
          ///return temp;
     private void readNumber () throws IOException {
          goodData = false;
          BufferedReader br = new BufferedReader (new InputStreamReader (System.in));
          System.out.print ("Checking Number : ");     
          s = br.readLine ();
          while ( (!goodData) ) {
               goodData = true;     
               try {     
                    this.Number = Integer.parseInt(s);
               catch (NumberFormatException a) {
                    goodData = false;
                    System.out.print ("PLEASE RE-ENTER NUMBER : ");
                    s = br.readLine();
          System.out.println("Return goodData");
          //return temps;
     public void getInput() throws IOException{
          this.showMenu();
          System.out.print ("PLEASE ENTER CHOICEa : ");
     //     BufferedReader br = new BufferedReader (new InputStreamReader (System.in));
          readChoice();
               while (choice != 6 ){
                    if (choice==3 ||choice==4 ||choice==5) {
               ///          if (this.choice == 6)
                    //          return;
                         this.callOther();     
                         this.showMenu();
                         this.goodData = false;     
                         System.out.print ("PLEASE ENTER CHOICEc : ");
                         readChoice();
                    else if (choice==1 ||choice==2 ) {
                         System.out.print ("Please enter the NUMBER you want to process: ");
                         readNumber();
                         this.callOneTwo();
                         this.print();
                         this.showMenu();
                         this.goodData = false;
                         System.out.print ("PLEASE ENTER CHOICEd : ");
                         readChoice();
          System.out.println ("Bye! Have a nice day");
     public void insert (int Number) {
//     public void insert ( ) {     
          if (top == 0) {
               this.Num[0] = Number;
               top++;     
               return;
          if (Num[0] >= Number && Num[1]==0) {
               int temp = Num[0];
               Num[0] = Number;
               Num[1] = temp;
               top++;
               return;
          if (Num[0] < Number && Num[1]==0){
               Num[1]=Number;
               top++;
               return;
          if (top >=2) {     
               tempSpot = this.apPos(Number);
               System.out.println("Inside top >= 2");
               if (top >= this.Num.length)
                    this.Num = this.copyArray ( this.Num, increment);
               for (int ii=top; ii > tempSpot; ii--)
                    this.Num[ii] = this.Num[ii-1];
               this.Num[tempSpot] = Number;
               top +=1;
               return ;
          else
               System.out.println("Out of insert method error");
               return ;
     private int apPos (int Number) {//find correct box for new number
          int spot = 0;
          if (this.top >= this.Num.length)
               this.Num = this.copyArray ( this.Num, increment);
          for (int i=0; i<Num.length; i++){
               if (this.top == 0 )
                    return (spot =0 );
               else if ( Number <= Num[0])               
                    return spot =0;
               else if ( Num[i] <= Number && Num[i+1] >= Number )          
                    return spot = i+1;
               else if ( Num[i] <= Number && Num[i+1] == 0)
                    return (spot = this.top);               
               else if ( Num[i] > Number && Num[i+1] == 0)                         
                    return spot = i;
          return spot;
     private void print() {
          System.out.println ("&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&");
          System.out.println("Inside of print");
          for (int i=0; i<(this.Num.length);i++)
               System.out.println ("Element "+i+ "= " + this.Num );
          System.out.println ("&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&");
     public void clear () {
          int tempNum [] = new int [orSize];
          //for (int i=0; i<Num.length;i++)
          //     Num[i]=0;
          Num = tempNum ;
          this.top =0;
          print();
     public int smallest ( ) {
          System.out.println ("@@@@@@@@@@@@@@@@@@@@@@@");
          int smallest=this.Num[0];//assume the first element in the array is the smallest
          if (this.Num[1] ==0)
               return smallest;
          System.out.println ("Inside of smallest");
          for (int i=1; i<this.top/*(this.Num).length*/; i++){
               if (this.Num[i] < smallest)
               smallest = this.Num[i];
               else if (this.Num[i] > smallest)
               smallest = smallest;
          this.smallest = smallest;
          System.out.println ("SMALLEST = "+this.smallest);
          System.out.println ("@@@@@@@@@@@@@@@@@@@@@@@");
          return ( smallest);
     public int largest ( ) {
          System.out.println ("~~~~~~~~~~~~~~~~~~~~~~~~~~");          
          System.out.println ("Inside of largest");     
          int largest=Num[0];//assume the first element in the array is the largest          
          if (this.Num[1] ==0)
               return largest;     
          for (int i=1; i<this.top; i++){
               if (Num[i] > largest)
               largest = Num[i];
               else if (Num[i] < largest)
               largest = largest;     
          this.largest= largest;
          System.out.println ("LARGEST = "+this.largest);     
          System.out.println ("~~~~~~~~~~~~~~~~~~~~~~~~~~");
          return largest;
     public boolean full (){
          if (this.top >= this.Num[this.Num.length-1]){
               if (this.top == this.Num[this.Num.length-1]){
                    System.out.println("Array is full");                    
                    return true;
               else
               System.out.println("Array is not full");
               return false;
          else
               System.out.println("Array is NOT full");
          return false;
     public boolean empty (){
          System.out.println("Top is = "+this.top);
          if ((this.Num[0]!=0)&&(this.Num[this.Num.length-1] ==0)){
               System.out.println ("The array is not full");
               return true;
          else if ((this.Num[0]!=0)&&(this.Num[this.Num.length-1] !=0)){
               System.out.println ("The array is full");
               return false;
          else if ((this.Num[0]==0)&&(this.Num[this.Num.length-1] ==0)){
               System.out.println ("The array is empty");
               return true;
          else if ((top == (this.Num.length - 1))&&(this.Num[0]!=0)){
               System.out.println ("The array is full");
               return false;
          else return false;
     public int find (int NumberTobeSearch) {
          int left = 0;
          int right = this.size-1;
          while (left != right-1) {
               int middle = (right + left)/2;
               if (this.Num[middle] > NumberTobeSearch){
                    left = left;
                    right = middle;
                    if (this.Num[left] == NumberTobeSearch)
                         return left = this.findCopy(Num,NumberTobeSearch,left);
                    else if ((this.Num[left] != NumberTobeSearch) && (right - left) == 1 )
                         return -1;
               else if (this.Num[middle] < NumberTobeSearch){     
                    left = middle;
                    right = right;
                    if (this.Num[right] == NumberTobeSearch)
                         return right = this.findCopy(Num,NumberTobeSearch,right);
                    else if (((right - left)== 1) && (this.Num[left] !=NumberTobeSearch )){
                         System.out.println("No Number found");
                         return -1;     
               else /*if (this.Num[middle] == NumberTobeSearch)*/{
                    System.out.println("Inside third if");     
                    left = middle;
                    right = middle+1;
                    return left = this.findCopy(Num,NumberTobeSearch,left);
          System.out.println ("THE LAST INDEX IS BEFORE EXIT " + left);
          return left;     
     public void delete (int NumberTobeDelete) {
          int tempIndex = this.find (NumberTobeDelete);     
          if ( tempIndex == -1){
               System.out.println("NO NUMBER FOUND, TRY DELETING ANOTHER");
               return;
          else if (this.top >= this.Num.length){
               System.out.println("I'm allocating more space for U");
               this.Num = this.copyArray ( this.Num, increment);
          int i = 0;
          for (i=tempIndex; i<this.top; i++)
                    this.Num[i] = this.Num[i+1];               
               top--;//keeping track of top          
     private int findCopy (int [] Num, int Number, int tempIndex){
          for (int i=0; i<tempIndex;i++){
               if (Num[i] == Number)
                    return i;
          return tempIndex;     
     private int [] copyArray (int [] Num, int howMany){
     System.out.println("----------------------------");
     System.out.println("Inside CopyArray");
     int Bigger [] = new int [Num.length+howMany];
     for (int i=0; i<Num.length; i++)
          Bigger[i] = Num[i];
     Num = Bigger;
     System.out.println("----------------------------");
          return Num;     
     private void showMenu () {
          System.out.println ("********************************");     
          System.out.println ("Please choose the following operation ");
          System.out.println ("Enter 1 for INSERT");
          System.out.println ("Enter 2 for DELETE");
          System.out.println ("Enter 3 for the SMALLEST ");
          System.out.println ("Enter 4 for the LARGEST");
          System.out.println ("Enter 5 to CLEAR ");
          System.out.println ("Enter 6 to EXIT ");     
          System.out.println ("*******************************");          
///end of program thank for helping guys

Answer 1

To sort a List (which includes Vector) of mutually Comparable objects, you can use Collections.sort(List). If that's not what you're trying to do, please post the relevant sections of the code (i.e. not the IO etc) using &#91;code] tags and explain the problem - compiler errors, runtime errors, conceptual problems.