Merge pull request #5637 from kcacademic/character-encoding

BAEL-2300: Adding files for the tutorial on character encoding.

core-java/src/main/java/com/baeldung/encoding/CharacterEncodingExamples.java

@@ -0,0 +1,32 @@
+package com.baeldung.encoding;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.UnsupportedEncodingException;
+
+public class CharacterEncodingExamples {
+
+    static String readFile(String filePath, String encoding) throws IOException {
+        File file = new File(filePath);
+        StringBuffer buffer = new StringBuffer();
+        try (InputStreamReader isr = new InputStreamReader(new FileInputStream(file), encoding)) {
+            int data;
+            while ((data = isr.read()) != -1) {
+                buffer.append((char) data);
+            }
+        }
+        return buffer.toString();
+    }
+
+    static String convertToBinary(String input, String encoding) throws UnsupportedEncodingException {
+        byte[] bytes = input.getBytes(encoding);
+        StringBuffer buffer = new StringBuffer();
+        for (int b : bytes) {
+            buffer.append(Integer.toBinaryString((b + 256) % 256));
+            buffer.append(" ");
+        }
+        return buffer.toString();
+    }
+}