First Push

src/praktikum01/Zahlenfilter.java

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+package praktikum01;
+
+public class Zahlenfilter {
+    public static void main(String[] args) {
+        Zahlenfilter check = new Zahlenfilter();
+        check.checkNumbers();
+    }
+    public void checkNumbers(){
+        checkForFive();
+        endsWithNine();
+        numberAndPredecessorDividableByThree();
+    }
+    public void checkForFive (){
+        for (int i = 1; i <= 200; i++) {
+            if (i%5 ==0){
+                System.out.println(i + "ist durch 5 teilbar" );
+            }
+        }
+    }
+    public void endsWithNine (){
+        for (int i = 1; i <= 200; i++) {
+            if (i%10 ==9){
+                System.out.println(i + "endet auf 9");
+            }
+        }
+    }
+    public void numberAndPredecessorDividableByThree(){
+        for (int i = 2; i <= 200; i++) {
+            int predecessor = i - 1;
+            int sum = i + predecessor;
+
+            if (sum % 3 == 0) {
+                System.out.println(i + " und " + predecessor + " addiert ergeben " + sum + " und " + sum + " ist durch 3 teilbar.");
+            }
+        }
+    }
+
+
+
+}