BAEL-668 find min/max from a list/collection (#1134)

* BAEL-668 find min/max from a list/collection

* BAEL-668 using mapToInt instead of Compare

* BAEL-668 using direct assertion with the method call

core-java/src/main/java/com/baeldung/java_8_features/Person.java

@@ -0,0 +1,27 @@
+package com.baeldung.java_8_features;
+
+public class Person {
+    private String name;
+    private Integer age;
+
+    public Person(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Integer getAge() {
+        return age;
+    }
+
+    public void setAge(Integer age) {
+        this.age = age;
+    }
+}