Merge pull request eugenp#9646 from alimate/BAEL-4115

eric-martin · web-flow · commit 6d085ce9f14c · 2020-07-13T11:16:45.000-05:00
BAEL-4115: Memory Address of Objects in Java
diff --git a/core-java-modules/core-java-jvm-2/src/test/java/com/baeldung/memaddress/MemoryAddressUnitTest.java b/core-java-modules/core-java-jvm-2/src/test/java/com/baeldung/memaddress/MemoryAddressUnitTest.java
@@ -0,0 +1,24 @@
+package com.baeldung.memaddress;
+
+import org.junit.Test;
+import org.openjdk.jol.vm.VM;
+
+public class MemoryAddressUnitTest {
+
+    @Test
+    public void printTheMemoryAddress() {
+        String answer = "42";
+
+        System.out.println("The memory address is " + VM.current().addressOf(answer));
+    }
+
+    @Test
+    public void identityHashCodeAndMemoryAddress() {
+        Object obj = new Object();
+
+        System.out.println("Memory address: " + VM.current().addressOf(obj));
+        System.out.println("hashCode: " + obj.hashCode());
+        System.out.println("hashCode: " + System.identityHashCode(obj));
+        System.out.println("toString: " + obj);
+    }
+}
