Merge pull request eugenp#5248 from asturcon/heapDump

eric-martin · web-flow · commit fe3bf7487d13 · 2018-09-19T20:56:07.000-05:00
BAEL-2171 - Different Ways to Capture Java Heap Dumps
diff --git a/core-java/src/main/java/com/baeldung/heapdump/HeapDump.java b/core-java/src/main/java/com/baeldung/heapdump/HeapDump.java
@@ -0,0 +1,25 @@
+package com.baeldung.heapdump;
+
+import com.sun.management.HotSpotDiagnosticMXBean;
+
+import javax.management.MBeanServer;
+
+import java.io.IOException;
+import java.lang.management.ManagementFactory;
+import java.nio.file.Paths;
+
+public class HeapDump {
+
+    public static void dumpHeap(String filePath, boolean live) throws IOException {
+        MBeanServer server = ManagementFactory.getPlatformMBeanServer();
+        HotSpotDiagnosticMXBean mxBean = ManagementFactory.newPlatformMXBeanProxy(
+          server, "com.sun.management:type=HotSpotDiagnostic", HotSpotDiagnosticMXBean.class);
+        mxBean.dumpHeap(filePath, live);
+    }
+
+    public static void main(String[] args) throws IOException {
+        String file = Paths.get("dump.hprof").toFile().getPath();
+
+        dumpHeap(file, true);
+    }
+}
