Always use UTF-8

ebean-api/src/main/java/io/ebean/text/csv/CsvReader.java

@@ -18,7 +18,7 @@ import java.util.Locale;
  * try {
  *   File f = new File("src/test/resources/test1.csv");
  *
- *   FileReader reader = new FileReader(f);
+ *   FileReader reader = new FileReader(f, encoding);
  *
  *   CsvReader<Customer> csvReader = DB.createCsvReader(Customer.class);
  *

ebean-api/src/main/java/io/ebean/util/IOUtils.java

@@ -0,0 +1,48 @@
+package io.ebean.util;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * Utilities for IO. It uses UTF-8 as encoding when reading/writing and uses
+ * buffered IO for better performance.
+ */
+public class IOUtils {
+
+  /**
+   * Read from stream as UTF-8.
+   */
+  public static BufferedReader newReader(InputStream is) {
+    return new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8));
+  }
+
+  /**
+   * Read from file as UTF-8.
+   */
+  public static BufferedReader newReader(File file) throws FileNotFoundException {
+    return newReader(new FileInputStream(file));
+  }
+
+  /**
+   * Write to stream as UTF-8
+   */
+  public static BufferedWriter newWriter(OutputStream os) {
+    return new BufferedWriter(new OutputStreamWriter(os, StandardCharsets.UTF_8));
+  }
+
+  /**
+   * Write to file as UTF-8
+   */
+  public static BufferedWriter newWriter(File file) throws FileNotFoundException {
+    return newWriter(new FileOutputStream(file));
+  }
+}