JEP 305: Pattern Matching for instanceof (Preview)

Author: ibrahimatay

README.md

@@ -44,6 +44,7 @@ This repository contains Java examples that are designed to track and document t
   * [JEP 361](java-14/src/main/java/com/ibrahimatay/JEP361SwitchExpressions.java): Switch Expressions
   * [JEP 359](java-14/src/main/java/com/ibrahimatay/JEP359Records.java): Records (Preview)
   * [JEP 369](java-14/src/main/java/com/ibrahimatay/JEP368TextBlocks.java): Text Blocks (Second Preview)
+  * [JEP 305](java-14/src/main/java/com/ibrahimatay/JEP305PatternMatchingForInstanceof.java): Pattern Matching for instanceof (Preview)
 
 * [Java 12](java-12/) (March, 2019)
   * API Improvements

java-14/pom.xml

@@ -23,8 +23,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
                     <compilerArgs>--enable-preview</compilerArgs>
-                    <source>15</source>
-                    <target>15</target>
+                    <source>16</source>
+                    <target>16</target>
                 </configuration>
             </plugin>
         </plugins>

java-14/src/main/java/com/ibrahimatay/JEP305PatternMatchingForInstanceof.java

@@ -0,0 +1,18 @@
+package com.ibrahimatay;
+
+public class JEP305PatternMatchingForInstanceof {
+    public static void main(String[] args) {
+        // JEP 305: Pattern Matching for instanceof (Preview)
+        // https://openjdk.org/jeps/305
+
+        Object obj = "JEP305P";
+        if (obj instanceof String) {
+            String str = (String) obj;
+            System.out.println(str.toUpperCase());
+        }
+
+        if (obj instanceof String str){
+            System.out.println(str.toUpperCase());
+        }
+    }
+}