adding methods in java tutorial (#7766)

* adding methods in java tutorial

* adding static method and removing link

core-java-modules/core-java-lang-oop-2/src/main/java/com/baeldung/basicmethods/PersonName.java

@@ -0,0 +1,37 @@
+package com.baeldung.basicmethods;
+
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+public class PersonName {
+
+    public String getName(String firstName, String lastName) throws RuntimeException {
+        return firstName + " " + lastName;
+    }
+
+    public String getName(String firstName, String middleName, String lastName) {
+        if (!middleName.equals("")) {
+            return firstName + " " + lastName;
+        }
+        return firstName + " " + middleName + " " + lastName;
+    }
+
+    public void printFullName(String firstName, String lastName) {
+        System.out.println(firstName + " " + lastName);
+    }
+
+    public void writeName(String name) throws IOException {
+        PrintWriter out = new PrintWriter(new FileWriter("OutFile.txt"));
+        out.println("Name: " + name);
+        out.close();
+    }
+
+    public static String getNameStatic(String firstName, String lastName) {
+        return firstName + " " + lastName;
+    }
+
+    public static void callToStaticMethod() {
+        System.out.println("Name is: " + PersonName.getNameStatic("Alan", "Turing"));
+    }
+}