From c22f09177187855253767afe324006eaa2e0b9df Mon Sep 17 00:00:00 2001
From: Arya <108480101+drafii@users.noreply.github.com>
Date: Wed, 30 Nov 2022 23:21:46 +0330
Subject: [PATCH] Added the code for "Errors and Exceptions in Java". (#13104)

* Added the code for "Errors and Exceptions in Java".

* Added the unit tests.
---
 .../CheckedExceptionExcample.java                 | 15 +++++++++++++++
 .../exceptions_vs_errors/ErrorExample.java        | 14 ++++++++++++++
 .../RuntimeExceptionExample.java                  | 11 +++++++++++
 .../ErrorExampleUnitTest.java                     | 13 +++++++++++++
 .../RuntimeExceptionExampleUnitTest.java          | 13 +++++++++++++
 5 files changed, 66 insertions(+)
 create mode 100644 core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/CheckedExceptionExcample.java
 create mode 100644 core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/ErrorExample.java
 create mode 100644 core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/RuntimeExceptionExample.java
 create mode 100644 core-java-modules/core-java-exceptions-4/src/test/java/com/baeldung/exception/exceptions_vs_errors/ErrorExampleUnitTest.java
 create mode 100644 core-java-modules/core-java-exceptions-4/src/test/java/com/baeldung/exception/exceptions_vs_errors/RuntimeExceptionExampleUnitTest.java

diff --git a/core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/CheckedExceptionExcample.java b/core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/CheckedExceptionExcample.java
new file mode 100644
index 0000000000..443f34265e
--- /dev/null
+++ b/core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/CheckedExceptionExcample.java
@@ -0,0 +1,15 @@
+package com.baeldung.exception.exceptions_vs_errors;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+
+public class CheckedExceptionExcample {
+    public static void main(String[] args) {
+        try (FileInputStream fis = new FileInputStream(new File("test.txt"))) {
+            fis.read();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}
diff --git a/core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/ErrorExample.java b/core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/ErrorExample.java
new file mode 100644
index 0000000000..143ca8c57e
--- /dev/null
+++ b/core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/ErrorExample.java
@@ -0,0 +1,14 @@
+package com.baeldung.exception.exceptions_vs_errors;
+
+public class ErrorExample {
+    
+    public static void main(String[] args) {
+        overflow();
+    }
+
+    public static void overflow() {
+        System.out.println("overflow...");
+        overflow();
+    }
+
+}
diff --git a/core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/RuntimeExceptionExample.java b/core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/RuntimeExceptionExample.java
new file mode 100644
index 0000000000..3d5728c385
--- /dev/null
+++ b/core-java-modules/core-java-exceptions-4/src/main/java/com/baeldung/exception/exceptions_vs_errors/RuntimeExceptionExample.java
@@ -0,0 +1,11 @@
+package com.baeldung.exception.exceptions_vs_errors;
+
+public class RuntimeExceptionExample {
+    public static void main(String[] args) {
+        int[] arr = new int[20];
+
+        arr[20] = 20;
+
+        System.out.println(arr[20]);
+    }
+}
diff --git a/core-java-modules/core-java-exceptions-4/src/test/java/com/baeldung/exception/exceptions_vs_errors/ErrorExampleUnitTest.java b/core-java-modules/core-java-exceptions-4/src/test/java/com/baeldung/exception/exceptions_vs_errors/ErrorExampleUnitTest.java
new file mode 100644
index 0000000000..9fca24638d
--- /dev/null
+++ b/core-java-modules/core-java-exceptions-4/src/test/java/com/baeldung/exception/exceptions_vs_errors/ErrorExampleUnitTest.java
@@ -0,0 +1,13 @@
+package com.baeldung.exception.exceptions_vs_errors;
+
+import org.junit.Test;
+import org.junit.jupiter.api.Assertions;
+
+// Unit test for the ErrorExample class.
+public class ErrorExampleUnitTest {
+    @Test
+    public void whenMainMethodIsRun_thenStackOverflowError() {
+        Assertions.assertThrows(StackOverflowError.class, 
+            () -> ErrorExample.main(null));
+    }
+}
diff --git a/core-java-modules/core-java-exceptions-4/src/test/java/com/baeldung/exception/exceptions_vs_errors/RuntimeExceptionExampleUnitTest.java b/core-java-modules/core-java-exceptions-4/src/test/java/com/baeldung/exception/exceptions_vs_errors/RuntimeExceptionExampleUnitTest.java
new file mode 100644
index 0000000000..9c2c1f478b
--- /dev/null
+++ b/core-java-modules/core-java-exceptions-4/src/test/java/com/baeldung/exception/exceptions_vs_errors/RuntimeExceptionExampleUnitTest.java
@@ -0,0 +1,13 @@
+package com.baeldung.exception.exceptions_vs_errors;
+
+import org.junit.Test;
+import org.junit.jupiter.api.Assertions;
+
+// Unit test for the RuntimeExceptionExample class.
+public class RuntimeExceptionExampleUnitTest {
+    @Test
+    public void whenMainMethodIsRun_thenArrayIndexOutOfBoundsExceptionIsThrown() {
+        Assertions.assertThrows(ArrayIndexOutOfBoundsException.class, 
+            () -> RuntimeExceptionExample.main(null));
+    }
+}