@Lookup annotation Code (#3900)

* Updated

* Changed Test Names

* Updated code for method injection section 3.2

* Added Grader bean and changes for it

spring-core/src/test/java/com/baeldung/methodinjections/StudentTest.java

@@ -0,0 +1,31 @@
+package com.baeldung.methodinjections;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+public class StudentTest {
+
+    @Test
+    public void whenLookupMethodCalled_thenNewInstanceReturned() {
+        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(AppConfig.class);
+        Student student1 = context.getBean("studentBean", Student.class);
+        Student student2 = context.getBean("studentBean", Student.class);
+
+        Assert.assertEquals(student1, student2);
+        Assert.assertNotEquals(student1.getNotification("Alex"), student2.getNotification("Bethany"));
+        context.close();
+    }
+
+    @Test
+    public void whenAbstractGetterMethodInjects_thenNewInstanceReturned() {
+        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
+        StudentServices services = context.getBean("studentServices", StudentServices.class);
+
+        Assert.assertEquals("PASS", services.appendMark("Alex", 76));
+        Assert.assertEquals("FAIL", services.appendMark("Bethany", 44));
+        Assert.assertEquals("PASS", services.appendMark("Claire", 96));
+        context.close();
+    }
+}