Update examples.

Author: gk-brown

sierra-test/src/main/java/org/httprpc/sierra/test/PreviewTest.java

@@ -0,0 +1,71 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.httprpc.sierra.test;
+
+import com.formdev.flatlaf.FlatLightLaf;
+import org.httprpc.sierra.UILoader;
+
+import javax.swing.JFrame;
+import javax.swing.SwingUtilities;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import static org.httprpc.kilo.util.Collections.*;
+
+public class PreviewTest extends JFrame implements Runnable {
+    private PreviewTest() {
+        super("Preview Test");
+
+        setDefaultCloseOperation(EXIT_ON_CLOSE);
+    }
+
+    @Override
+    public void run() {
+        var workingPath = Path.of(System.getProperty("java.io.tmpdir"));
+
+        var names = listOf("GreetingTest.xml", "world.png");
+        var paths = names.stream().map(workingPath::resolve).toList();
+
+        try {
+            try {
+                var n = names.size();
+
+                for (var i = 0; i < n; i++) {
+                    try (var inputStream = getClass().getResourceAsStream(names.get(i))) {
+                        Files.copy(inputStream, paths.get(i));
+                    }
+                }
+
+                setContentPane(UILoader.load(paths.getFirst()));
+            } finally {
+                for (var path : paths) {
+                    Files.deleteIfExists(path);
+                }
+            }
+        } catch (IOException exception) {
+            throw new RuntimeException(exception);
+        }
+
+        setSize(320, 480);
+        setVisible(true);
+    }
+
+    public static void main(String[] args) {
+        FlatLightLaf.setup();
+
+        SwingUtilities.invokeLater(new PreviewTest());
+    }
+}