add sample to Java25 category

Author: wadoon

key.ui/examples/Java/TryWithResources/README.txt

@@ -0,0 +1,8 @@
+example.name = Try With Resources
+example.path = Java 25
+example.file = project.key
+example.additionalFile.1 = TryWithResources.java
+
+Try-With-Resources statements are supported in KeY. They are reduced to nested try/finally blocks with proper exception suppression handling.
+
+The proof obligation is verifiable without user interaction.

key.ui/examples/Java/TryWithResources/TryWithResources.java

@@ -0,0 +1,34 @@
+public final class TryWithResources {
+    /*@ ensures true; requires true; */
+    public void m() throws Exception {
+        // Simple try-with-resources
+        try (Resource r = new Resource()) {
+            r.use();
+        }
+        
+        // Multiple resources
+        try (Resource r1 = new Resource(); Resource r2 = new Resource()) {
+            r1.use();
+            r2.use();
+        }
+        
+        // Java 9+ style with existing variable
+        Resource existing = new Resource();
+        try (existing) {
+            existing.use();
+        }
+    }
+    
+    static class Resource implements AutoCloseable {
+        /*@ ensures true; requires true; */
+        public void use() {
+            // use the resource
+        }
+        
+        /*@ ensures true; requires true; */
+        @Override
+        public void close() throws Exception {
+            // close the resource
+        }
+    }
+}

key.ui/examples/Java/TryWithResources/project.key

@@ -0,0 +1,8 @@
+\profile "Java Profile";
+\javaSource ".";
+
+\proofObligation {
+    "class" : "de.uka.ilkd.key.proof.init.FunctionalOperationContractPO",
+    "contract" : "TryWithResources[TryWithResources::m()].JML operation contract.0",
+    "name" : "TryWithResources[TryWithResources::m()].JML operation contract.0"
+}

key.ui/examples/index/samplesIndex.txt

@@ -25,6 +25,7 @@ Java/MultiCatch/README.txt
 Java/Records/README.txt
 Java/Records+CompactConstructor/README.txt
 Java/TextBlockLiterals/README.txt
+Java/TryWithResources/README.txt
 
 # The KeY Book (note: the comments here are only for maintainability, if you want to move an entry to a different section, look into the individual txt file!)
 ## Chapter 15 - Using the KeY Prover