[Kuj4k]

This program is to have to user enter numbers in the top text field and then be able to sort them and/or show the min number.

Ive been working on this code for multiple hours now today, I have it almost done but I cant not get my buildArray class to work properly. Its mostly the scanner method Im having troubles with. I just want to be able to use "," and not have them show up as -1.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class MainWindow extends JFrame implements ActionListener {
    JScrollPane pane1;
    JScrollPane pane2;
    JTextArea area1;
    JTextArea area2;
    JLabel area1Title;
    JLabel area2Title;
    JButton sort;
    JButton findMins;
    JButton clearArea1;
    JButton clearArea2;
    
    public MainWindow() {
        super("Array Fun");
        setBounds(100, 200, 800, 800);
        getContentPane().setLayout(null);
        setVisible(true);
        
        area1 = new JTextArea();
        pane1 = new JScrollPane(area1);
        pane1.setBounds(10, 10, 400, 300);
        add(pane1);
        
        area1Title = new JLabel("Enter text in the above space", JLabel.CENTER);
        area1Title.setBounds(10, 320, 400, 40);
        add(area1Title);
        
        area2 = new JTextArea();
        area2.setEditable(false);
        pane2 = new JScrollPane(area2);
        pane2.setBounds(10, 400, 400, 300);
        add(pane2);
 
        area2Title = new JLabel("Output text area", JLabel.CENTER);
        area2Title.setBounds(10, 710, 400, 40);
        add(area2Title);
        
        findMins = new JButton("Find Minimums");
        findMins.setBounds(450, 250, 250, 40);
        findMins.addActionListener(this);
        add(findMins);
        
        sort = new JButton("Sort Descending");
        sort.setBounds(450, 320, 250, 40);
        sort.addActionListener(this);
        add(sort);
        
        clearArea1 = new JButton("Clear Input Text Area");
        clearArea1.setBounds(450, 380, 250, 40);
        clearArea1.addActionListener(this);
        add(clearArea1);
        
        clearArea2 = new JButton("Clear Output Text Area");
        clearArea2.setBounds(450, 430, 250, 40);
        clearArea2.addActionListener(this);
        add(clearArea2);
        
        repaint();
    }
    
    private int[] buildArray(String line) {
        int[]arr = new int[line.length()];
        Scanner scan = new Scanner (line);
        scan.useDelimiter (",");
        
        for (int i = 0; i < line.length(); i++){
           
            arr[i] = Character.digit(line.charAt(i),10);
            
           }
            return arr;
    }
    
    private int findMin(int numbers[]) {
    //PRE numbers.length >= 1
        
        int min = numbers [0];
        
        for (int i = 1; i < numbers.length; i++){
            
            if (numbers [i] < min) {
                min = numbers [i];
            }
        } 
        return min;
    }
    
    private String makeString(int numbers[]) {
    //PRE numbers.length >= 1
    int i = 0;
    String s1 = new String ("");
    while (i < numbers.length){
        s1 = numbers[i] + s1 ;
        i++;
        
    }
    return s1;

    }
    
    private void sort(int numbers[]) {
        for (int i = 1; i< numbers.length; i++){
            int j = i-1;
            int temp = numbers[i];
            while (j >= 0 && temp > (numbers[j])){
              numbers[j+1] = numbers[j];
              j--;
            }
            numbers[j+1] = temp;
        }
    }
    
    private void sortLines() {
        int result;
        int lineNumber = 1;
        int numbers[];
        String contents = area1.getText();
        Scanner nextLine = new Scanner(contents);
        nextLine.useDelimiter("\n");
        
        String line;
        String outputLine;
        
        while (nextLine.hasNext()) {
            line = nextLine.next();
            numbers = buildArray(line);
            sort(numbers);
            outputLine = "Line "+lineNumber+" Sorted:\t"+makeString(numbers)+'\n';
            area2.append(outputLine);
            lineNumber++;
        }
    }
    
    private void findMins() {
        int lineNumber = 1;
        int numbers[];
        String contents = area1.getText();
        Scanner nextLine = new Scanner(contents);
        nextLine.useDelimiter("\n");
        
        String line;
        String outputLine;
        
        while (nextLine.hasNext()) {
            line = nextLine.next();
            numbers = buildArray(line);
            outputLine = "The minimum value in line "+lineNumber+" is "+ findMin(numbers)+'\n';
            area2.append(outputLine);
            lineNumber++;
        }
    }
        
    public void actionPerformed(ActionEvent e) {
        if ((JButton) e.getSource() == clearArea1)
            area1.setText("");
        else if ((JButton) e.getSource() == clearArea2)
            area2.setText("");
        else if ((JButton) e.getSource() == findMins)
            findMins();
        else
            sortLines();
    }
}

Any help is appreciated if I can just get the commas to work I can be done.