neue Klasse ChkBoxPanel

src/main/java/projekt/enigma/view/ChkBoxPanel.java

+package projekt.enigma.view;
+
+import java.awt.*;
+import javax.swing.*;
+
+public class ChkBoxPanel extends JPanel {
+    /*private static JPanel panel = new JPanel();*/
+    private static JCheckBox[] checkbox;
+    private static Character[] alphabet;/* = {'A','B','C','D'};*/
+    private static int charSize;
+
+    public ChkBoxPanel(Character[] alphabet) {
+        this.charSize = alphabet.length;
+        this.alphabet = alphabet;
+        /*this.setTitle("Vertausche Buchstaben");
+        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);*/
+        this.setSize(30, charSize * 25);
+        //this.setLocation(getMousePosition()/*.x, getMousePosition().y+this.getHeight()+30*/);
+        initializeComponents();
+    }
+
+    private void initializeComponents() {
+        this.checkbox = new JCheckBox[charSize];
+        GridLayout panelLayout = new GridLayout();
+        this.setLayout(panelLayout);
+        if (!(charSize % 2 == 0)) {
+            this.setSize(30, (charSize + 1) * 20);
+            panelLayout.setRows((charSize + 1) / 2);
+        } else {
+            this.setSize(30, charSize * 10);
+            panelLayout.setRows(charSize / 2);
+        }
+        panelLayout.setColumns(2);
+        //panelLayout.setVgap(5);
+        //panelLayout.setHgap(-5);
+
+
+        for (int i = 0; i < charSize; i++) {
+            checkbox[i] = new JCheckBox(alphabet[i] + "");
+            checkbox[i].setSize(15, 20);
+            checkbox[i].setHorizontalTextPosition(SwingConstants.CENTER);
+            checkbox[i].setVerticalTextPosition(SwingConstants.TOP);
+/*            if (!(i%2==0)){
+            }*/
+            checkbox[i].setMargin(new Insets(0, 20, 0, 20));
+            //checkbox[i].setLocation(20, (i + 1) * 30);
+            this.add(checkbox[i]);
+        }
+        /* this.getContentPane().add(panel);*/
+        checkbox[0].setSelected(true);
+        //this.add(panel);
+        //this.setLocation(100, 100);
+        this.setVisible(true);
+    }
+
+
+    private int isChecked() {
+        for (int i = 0; i < charSize; i++) {
+            if (checkbox[i].isSelected()) {
+
+                // do something...
+
+            } else {
+
+                // do something else...
+
+            }
+        }
+        return 0;
+    }
+
+
+}
+