Add read methods

core-java-modules/core-java-console/src/main/java/com/baeldung/systemin/SystemInRead.java

@@ -0,0 +1,45 @@
+package com.baeldung.systemin;
+
+import java.io.IOException;
+
+class SystemInRead {
+    static void readSingleCharacter() {
+        System.out.println("Enter a character:");
+        try {
+            int input = System.in.read();
+            System.out.println((char) input);
+        }
+        catch (IOException e) {
+            System.err.println("Error reading input: " + e.getMessage());
+        }
+    }
+    static void readMultipleCharacters() {
+        System.out.println("Enter characters (Press 'Enter' to quit):");
+        try {
+            int input;
+            while ((input = System.in.read()) != '\n') {
+                System.out.print((char) input);
+            }
+        } catch (IOException e) {
+            System.err.println("Error reading input: " + e.getMessage());
+        }
+    }
+
+    static void readWithParameters() {
+        try {
+            byte[] byteArray = new byte[5];
+            int bytesRead;
+            int totalBytesRead = 0;
+
+            while ((bytesRead = System.in.read(byteArray, 0, byteArray.length)) != -1) {
+                System.out.print("Data read: " + new String(byteArray, 0, bytesRead));
+                totalBytesRead += bytesRead;
+            }
+
+            System.out.println("\nBytes Read: " + totalBytesRead);
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}