kalkulator v1

src/main/java/emps/P6_MultiCity.java

+package emps;
+
+import org.apache.commons.collections4.MultiSet;
+import org.apache.commons.collections4.multiset.HashMultiSet;
+
+import java.util.List;
+
+public class P6_MultiCity {
+    public static void main(String[] args) {
+        List<Employee> emps = ObslugaPliku.wczytaj("emps.csv");
+        MultiSet<String> cities = new HashMultiSet<>();
+
+        for (Employee emp : emps) {
+            cities.add(emp.getCity());
+        }
+
+        for (String city : cities.uniqueSet()) {
+            System.out.println(city + " " + cities.getCount(city));
+        }
+
+    }
+}

src/main/java/kalkulatory/KalkulatorWielometodowy.java

+package kalkulatory;
+
+public class KalkulatorWielometodowy {
+
+    public int add(int x, int y) {
+        return x + y;
+    }
+
+    public int sub(int x, int y) {
+        return x - y;
+    }
+
+    public int mul(int x, int y) {
+        return x * y;
+    }
+
+    public int div(int x, int y) {
+        return x / y;
+    }
+}

src/main/java/kalkulatory/ProgramWielometodowy.java

+package kalkulatory;
+
+import java.util.Scanner;
+
+public class ProgramWielometodowy {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        KalkulatorWielometodowy k = new KalkulatorWielometodowy();
+        while(true) {
+            System.out.println("Podaj działanie jako + 2 3 lub Q, aby zakończyć");
+            String operacja = sc.next();
+            if("Q".equalsIgnoreCase(operacja)) {
+                break;
+            }
+            int liczba1 = sc.nextInt();
+            int liczba2 = sc.nextInt();
+            int wynik = switch (operacja) {
+                case "+" -> k.add(liczba1, liczba2);
+                case "-" -> k.sub(liczba1, liczba2);
+                case "*" -> k.mul(liczba1, liczba2);
+                case "/" -> k.div(liczba1, liczba2);
+                default -> throw new IllegalArgumentException("Nie znam działania " + operacja);
+            };
+            System.out.printf("%d %s %d = %d\n", liczba1, operacja, liczba2, wynik);
+        }
+        System.out.println("nara");
+    }
+}

src/main/java/org/apache/commons/collections4/BagUtils.java

@@ -16,17 +16,7 @@
  */
 package org.apache.commons.collections4;
 
-import org.apache.commons.collections4.bag.CollectionBag;
-import org.apache.commons.collections4.bag.HashBag;
-import org.apache.commons.collections4.bag.PredicatedBag;
-import org.apache.commons.collections4.bag.PredicatedSortedBag;
-import org.apache.commons.collections4.bag.SynchronizedBag;
-import org.apache.commons.collections4.bag.SynchronizedSortedBag;
-import org.apache.commons.collections4.bag.TransformedBag;
-import org.apache.commons.collections4.bag.TransformedSortedBag;
-import org.apache.commons.collections4.bag.TreeBag;
-import org.apache.commons.collections4.bag.UnmodifiableBag;
-import org.apache.commons.collections4.bag.UnmodifiableSortedBag;
+import org.apache.commons.collections4.bag.*;
 
 /**
  * Provides utility methods and decorators for {@link Bag} and {@link SortedBag} instances.