kalkualtor - wiele działań

src/swing/kalkulator/OknoKalkulatora.form

@@ -57,7 +57,7 @@
                   <Component id="jButton1" pref="72" max="32767" attributes="0"/>
                   <Component id="jTextField3" max="32767" attributes="0"/>
               </Group>
-              <EmptySpace max="32767" attributes="0"/>
+              <EmptySpace pref="14" max="32767" attributes="0"/>
           </Group>
       </Group>
     </DimensionLayout>
@@ -107,6 +107,9 @@
         </Property>
         <Property name="text" type="java.lang.String" value="Oblicz"/>
       </Properties>
+      <Events>
+        <EventHandler event="actionPerformed" listener="java.awt.event.ActionListener" parameters="java.awt.event.ActionEvent" handler="jButton1ActionPerformed"/>
+      </Events>
     </Component>
     <Component class="javax.swing.JTextField" name="jTextField3">
       <Properties>

src/swing/kalkulator/OknoKalkulatora.java

@@ -43,6 +43,11 @@ public class OknoKalkulatora extends javax.swing.JFrame {
 
         jButton1.setFont(new java.awt.Font("Arial", 0, 32)); // NOI18N
         jButton1.setText("Oblicz");
+        jButton1.addActionListener(new java.awt.event.ActionListener() {
+            public void actionPerformed(java.awt.event.ActionEvent evt) {
+                jButton1ActionPerformed(evt);
+            }
+        });
 
         jTextField3.setFont(new java.awt.Font("Arial", 0, 32)); // NOI18N
         jTextField3.setHorizontalAlignment(javax.swing.JTextField.RIGHT);
@@ -78,7 +83,7 @@ public class OknoKalkulatora extends javax.swing.JFrame {
                 .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                     .addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, 72, Short.MAX_VALUE)
                     .addComponent(jTextField3))
-                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
+                .addContainerGap(14, Short.MAX_VALUE))
         );
 
         pack();
@@ -88,6 +93,22 @@ public class OknoKalkulatora extends javax.swing.JFrame {
         // TODO add your handling code here:
     }//GEN-LAST:event_jComboBox1ActionPerformed
 
+    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
+        long liczba1 = Long.parseLong(jTextField1.getText());
+        long liczba2 = Long.parseLong(jTextField2.getText());
+        String operacja = (String)jComboBox1.getSelectedItem();
+        // String operacja = jComboBox1.getItemAt(jComboBox1.getSelectedIndex());
+
+        long wynik = switch(operacja) {
+            case "+" -> liczba1 + liczba2;
+            case "-" -> liczba1 - liczba2;
+            case "*" -> liczba1 * liczba2;
+            case "/" -> liczba1 / liczba2;
+            default  -> 0;
+        };
+        jTextField3.setText(String.valueOf(wynik));
+    }//GEN-LAST:event_jButton1ActionPerformed
+
     /**
      * @param args the command line arguments
      */