add value of comparision

core-java-modules/core-java-string-conversions-3/src/main/java/com/baeldung/valueofcomparison/Student.java

@@ -0,0 +1,17 @@
+package com.baeldung.valueofcomparison;
+
+public class Student {
+
+    public String name;
+    public int age;
+
+    public Student(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    @Override
+    public String toString() {
+        return "Student(" + name + ", age " + age + ')';
+    }
+}

core-java-modules/core-java-string-conversions-3/src/test/java/com/baeldung/valueofcomparison/ValueOfUnitTest.java

@@ -0,0 +1,24 @@
+package com.baeldung.valueofcomparison;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class ValueOfUnitTest {
+
+    @Test
+    void whenCallingValueOf_thenMapToString() {
+        char[] exampleCharArray = {'a', 'b', 'c'};
+        Student alice = new Student("Alice", 5);
+
+        assertEquals("true", String.valueOf(true));
+        assertEquals("a", String.valueOf('a'));
+        assertEquals("abc", String.valueOf(exampleCharArray));
+        assertEquals("123.935", String.valueOf(123.935));
+        assertEquals("2222.3", String.valueOf(2222.3f));
+        assertEquals("2222", String.valueOf(2222));
+        assertEquals("123456789", String.valueOf(123456789L));
+        assertEquals("123456789", String.valueOf(123456789L));
+        assertEquals("Student(Alice, age 5)", String.valueOf(alice));
+    }
+}