Initial commit

src/GlobalExceptionHandler.java

-import java.io.FileWriter;
-import java.io.IOException;
-import java.io.PrintWriter;
-
-public class GlobalExceptionHandler {
-
-    public static void main(String[] args) {
-        // Set global exception handler
-        Thread.setDefaultUncaughtExceptionHandler(new MyExceptionHandler());
-
-        // Simulate an unhandled exception
-        System.out.println("Program started...");
-        String value = null;
-        System.out.println(value.length());  // This will throw NullPointerException
-    }
-
-    // Custom global exception handler
-    static class MyExceptionHandler implements Thread.UncaughtExceptionHandler {
-        @Override
-        public void uncaughtException(Thread t, Throwable e) {
-            try (PrintWriter writer = new PrintWriter(new FileWriter("error_log.txt", true))) {
-                writer.println("=== Uncaught Exception in thread \"" + t.getName() + "\" ===");
-                writer.println("Exception: " + e);
-                for (StackTraceElement element : e.getStackTrace()) {
-                    writer.println("\tat " + element);
-                }
-                writer.println(); // blank line between exceptions
-            } catch (IOException ioException) {
-                System.err.println("Failed to write to log file: " + ioException.getMessage());
-            }
-        }
-    }
-}
-
-

src/GlobalExceptionLogger.java

+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+public class GlobalExceptionLogger {
+
+    public static void main(String[] args) {
+        // Set up global exception handler
+        Thread.setDefaultUncaughtExceptionHandler((thread, throwable) -> {
+            logException(throwable);
+        });
+
+        // Sample code that throws an unhandled exception
+        System.out.println("Program started.");
+
+        int result = divide(10, 0);  // This will cause ArithmeticException
+
+        System.out.println("Result: " + result);
+    }
+
+    // Method that may throw an exception
+    public static int divide(int a, int b) {
+        return a / b;  // division by zero triggers an exception
+    }
+
+    // Method to log exceptions to a file
+    public static void logException(Throwable throwable) {
+        try (PrintWriter writer = new PrintWriter(new FileWriter("error.log", true))) {
+            writer.println("----- Exception Occurred -----");
+            writer.println("Thread: " + Thread.currentThread().getName());
+            writer.println("Exception: " + throwable);
+            for (StackTraceElement element : throwable.getStackTrace()) {
+                writer.println("\tat " + element);
+            }
+            writer.println();  // Blank line for separation
+        } catch (IOException e) {
+            System.err.println("Failed to log exception: " + e.getMessage());
+        }
+    }
+}