Upgranding: sumCalc Formel (from to)

src/main/java/src/TasksFrame.java

@@ -66,7 +66,7 @@ public class TasksFrame extends JFrame {
 
         setupDiff();
 
-        setupSumCalc(0, 10);
+        setupSumFromTo();
 
         setup5ModList(1, 20);
 
@@ -207,22 +207,51 @@ public class TasksFrame extends JFrame {
         return a-b;
     }
 
-    private void setupSumCalc(int from, int to) {
+
+    public void setupSumFromTo(){
 
         JPanel jPanel = setupPanel("Sum from to");
 
-        JLabel jLabel = new JLabel();
-        jLabel.setVisible(true);
-        jLabel.setBounds(30, 30, 50, 20);
+        JTextField a = new JTextField();
+        a.setBounds(10, 50, 30, 20);
+        a.setVisible(true);
+
+        JTextField b = new JTextField();
+        b.setBounds(50, 50, 30, 20);
+        b.setVisible(true);
+
+        JTextField result = new JTextField();
+        result.setBounds(100, 50, 40, 20);
+        result.setVisible(true);
+
+        JButton sumFromTo = new JButton("calculate");
+        sumFromTo.setBounds(10,90,100,30);
+        sumFromTo.setVisible(true);
+
+        sumFromTo.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                String texta = a.getText();
+                String textb = b.getText();
+                Integer val_a = Integer.valueOf(texta);
+                Integer val_b = Integer.valueOf(textb);
+                Integer res = sumCalc(val_a, val_b);
+                result.setText(String.valueOf(res));
+            }
+        });
+        jPanel.add(a);
+        jPanel.add(b);
+        jPanel.add(result);
+        jPanel.add(sumFromTo);
+    }
+
+    public int sumCalc(int from, int to) {
 
         int sum = 0;
         for (int i = from; i < to; i++) {
             sum += i;
         }
-
-        jLabel.setText(String.valueOf(sum));
-
-        jPanel.add(jLabel);
+    return sum+to;
     }
 
 

src/test/java/src/TasksFrameTest.java

@@ -35,6 +35,17 @@ class TasksFrameTest {
         assertEquals(-10,sum3);
     }
 
+    @Test
+    void setupSumFromTo(){
+        TasksFrame frame = new TasksFrame();
+        int p1= frame.sumCalc(1,5);
+        assertEquals(15,p1);
+        int p2= frame.sumCalc(1,10);
+        assertEquals(55,p2);
+        int p3= frame.sumCalc(0,2);
+        assertEquals(3,p3);
+    }
+
     }