fixed wrong output when using unicode characters

Author: palves-ulht

README.md

@@ -9,7 +9,7 @@ Include the following dependency on your pom file:
     <dependency>
 	    <groupId>org.dropproject</groupId>
 	    <artifactId>stdin-stdout-junit-helper</artifactId>
-	    <version>0.4.0</version>
+	    <version>0.4.1</version>
 	</dependency>
 
 ## How to use

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>org.dropproject</groupId>
     <artifactId>stdin-stdout-junit-helper</artifactId>
-    <version>0.4.0</version>
+    <version>0.4.1</version>
     <packaging>jar</packaging>
 
     <name>Stdin/Stdout Helper for JUnit</name>

src/main/java/org/dropproject/stdinstdoutjunithelper/StdinStdoutHelper.java

@@ -26,6 +26,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.PrintStream;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -393,8 +394,9 @@ protected void finalize() throws Throwable {
     private static String getLine(byte[] buffer, int offset, int length) {
 
         String result = "";
-        for (int i = offset; i < length; i++) {
-            char ch = (char) buffer[i];
+        String decodedString = new String(buffer, offset, length, StandardCharsets.UTF_8);
+        for (int i = 0; i < decodedString.length(); i++) {
+            char ch = decodedString.charAt(i);
             if (ch != '\n') {
                 result += ch;
             } else {