BAEL-9584: Clear Console Screen in Java

core-java-modules/core-java-console/src/main/java/com/baeldung/clearconsolescreen/ClearConsoleScreen.java

@@ -0,0 +1,39 @@
+package com.baeldung.clearconsolescreen;
+
+import java.io.IOException;
+
+public class ClearConsoleScreen {
+
+    public static void clearWithANSICodes() {
+        System.out.print("\033[H\033[2J");
+        System.out.flush();
+    }
+
+    public static void clearWithBlankLines() {
+        for (int i = 0; i < 50; i++) {
+            System.out.println();
+        }
+    }
+
+    public static void clearWithLinuxCommand() {
+        try {
+            new ProcessBuilder("clear")
+                    .inheritIO()
+                    .start()
+                    .waitFor();
+        } catch (IOException | InterruptedException e) {
+            Thread.currentThread().interrupt();
+        }
+    }
+
+    public static void main(String[] args) {
+
+        System.out.println("This text appears first.");
+
+        clearWithANSICodes();
+        clearWithBlankLines();
+        clearWithLinuxCommand();
+
+        System.out.println("End of program output.");
+    }
+}

core-java-modules/core-java-console/src/test/java/com/baeldung/clearconsolescreen/ClearConsoleScreenUnitTest.java

@@ -0,0 +1,23 @@
+package com.baeldung.clearconsolescreen;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+
+public class ClearConsoleScreenUnitTest {
+
+    @Test
+    void givenAnsiClearMethod_whenInvoked_thenDoesNotThrowException() {
+        assertDoesNotThrow(ClearConsoleScreen::clearWithANSICodes);
+    }
+
+    @Test
+    void givenBlankLineClearMethod_whenInvoked_thenDoesNotThrowException() {
+        assertDoesNotThrow(ClearConsoleScreen::clearWithBlankLines);
+    }
+
+    @Test
+    void givenLinuxClearMethod_whenInvoked_thenDoesNotThrowException() {
+        assertDoesNotThrow(ClearConsoleScreen::clearWithLinuxCommand);
+    }
+}