diff --git a/metrichash.map/.classpath b/metrichash.map/.classpath
index ca1a7d6..b5a99f2 100755
--- a/metrichash.map/.classpath
+++ b/metrichash.map/.classpath
@@ -39,15 +39,19 @@
 			<attribute name="optional" value="true"/>
 		</attributes>
 	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
 	<classpathentry kind="src" output="target/test-classes" path="target/generated-test-sources/test-annotations">
 		<attributes>
-			<attribute name="ignore_optional_problems" value="true"/>
-			<attribute name="test" value="true"/>
 			<attribute name="optional" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="ignore_optional_problems" value="true"/>
 			<attribute name="m2e-apt" value="true"/>
+			<attribute name="test" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="output" path="target/classes"/>
 </classpath>
diff --git a/metrichash.map/.settings/org.eclipse.jdt.core.prefs b/metrichash.map/.settings/org.eclipse.jdt.core.prefs
index 118ce3c..50c691c 100755
--- a/metrichash.map/.settings/org.eclipse.jdt.core.prefs
+++ b/metrichash.map/.settings/org.eclipse.jdt.core.prefs
@@ -1,9 +1,9 @@
 eclipse.preferences.version=1
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=17
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=11
+org.eclipse.jdt.core.compiler.compliance=17
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -13,5 +13,5 @@ org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
 org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
 org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
 org.eclipse.jdt.core.compiler.processAnnotations=disabled
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=11
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=17
diff --git a/metrichash.map/.settings/org.eclipse.wst.common.project.facet.core.xml b/metrichash.map/.settings/org.eclipse.wst.common.project.facet.core.xml
index fcbc247..48ff4f3 100755
--- a/metrichash.map/.settings/org.eclipse.wst.common.project.facet.core.xml
+++ b/metrichash.map/.settings/org.eclipse.wst.common.project.facet.core.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <faceted-project>
-  <installed facet="java" version="11"/>
+  <installed facet="java" version="17"/>
 </faceted-project>
diff --git a/metrichash.map/pom.xml b/metrichash.map/pom.xml
index 536fe80..c29dff5 100755
--- a/metrichash.map/pom.xml
+++ b/metrichash.map/pom.xml
@@ -22,8 +22,8 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>3.2</version>
         <configuration>
-          <!-- source>1.11</source>
-          <target>1.11</target-->
+          <source>17</source>
+          <target>17</target>
         </configuration>
       </plugin>
   </plugins>
diff --git a/metrichash.map/src/main/java/com/metrichash/map/ScratchPad.java b/metrichash.map/src/main/java/com/metrichash/map/ScratchPad.java
index b37560c..c472722 100644
--- a/metrichash.map/src/main/java/com/metrichash/map/ScratchPad.java
+++ b/metrichash.map/src/main/java/com/metrichash/map/ScratchPad.java
@@ -1,7 +1,8 @@
 package com.metrichash.map;
 
 import java.util.Optional;
-
+import java.util.stream.LongStream;
+import java.util.stream.Stream;
 public class ScratchPad {
 	
 	/**
@@ -10,16 +11,22 @@ public class ScratchPad {
 	 */
 	public void matrixReductionForAdding() {
 		long m1[][] = {{1,2,3},{4,5,6}};
-		long red0[][];
+		long red0[] = {7,8,9};
+		
+		//LongStream.of(red0).forEach(System.out::println);
+		//Stream.of(red0).forEach(x -> System.out.println(x));
 		
 		// initialize reduction matrix
-		for(long[] row : m1) {
+		//for(long[] row : m1) {
+		Stream.of(m1).forEach(y -> 
+			LongStream.of(y).forEach(x -> System.out.println(x)));
+		//}
+		
+		/*for(long[] row : m1) {
 			for(long col : row) {
 				System.out.println(col);
 			}
-		}
-		
-		
+		}*/		
 	}
 	
 	public void optional() {
@@ -36,7 +43,7 @@ public void optional() {
 	
 	public static void main(String[] args) {
 		ScratchPad pad = new ScratchPad();
-		pad.optional();
+		//pad.optional();
 		pad.matrixReductionForAdding();
 	}