Challenge 20.

finFirst filter method operation on streams.

Author: JavaZakariae

src/main/java/Challenge_20.java

@@ -0,0 +1,40 @@
+import java.util.List;
+
+/**
+ *
+ */
+public class Challenge_20 {
+
+    public static void main( String[] args ) {
+        List<Simpson> list = List.of(new Simpson("Homer", 35),
+                new Simpson("Margie", 35),
+                new Simpson("Bart", 10),
+                new Simpson("Lisa", 8));
+
+        list.stream()
+                .filter(simpson -> simpson.getName().equals("Bart"))
+                .filter(simpson -> simpson.getAge()>9)
+                .findFirst();
+    }
+
+    //Homer Margie Bart 10
+    private static class Simpson {
+        private String name;
+        private int age;
+
+        public Simpson( String name, int age ) {
+            this.age=age;
+            this.name=name;
+        }
+
+        public String getName() {
+            System.out.println(name);
+            return name;
+        }
+
+        public int getAge() {
+            System.out.println(age);
+            return age;
+        }
+    }
+}