Using buffered boundary stream in multipart parser. But currently not working

src/zutil/io/BufferedBoundaryInputStream.java

@@ -216,9 +216,9 @@ public class BufferedBoundaryInputStream extends FilterInputStream{
 	}
 
 	/**
-	 * @return if current position in the buffer is a boundary
+	 * @return if there is more data to read
 	 */
-	public boolean isBoundary(){
+	public boolean hasNext(){
 		return bound_pos == buf_pos;
 	}
 	

src/zutil/io/IOUtil.java

@@ -89,11 +89,23 @@ public class IOUtil {
     }
 
     /**
-     * Copies all data from the input stream to the output stream.
-     * The input stream will not be closed after method has returned.
+     * Copies all data from one InputStream to another OutputStream.
+     * The streams will not be closed after method has returned.
      */
     public static void copyStream(InputStream in, OutputStream out) throws IOException {
-        byte[] buff = new byte[256];
+        byte[] buff = new byte[8192]; // This is the default BufferedInputStream buffer size
+        int len;
+        while((len = in.read(buff)) > 0){
+            out.write(buff, 0, len);
+        }
+    }
+
+    /**
+     * Copies all data from one Reader to another Writer.
+     * The streams will not be closed after method has returned.
+     */
+    public static void copyStream(Reader in, Writer out) throws IOException {
+        char[] buff = new char[8192]; // This is the default BufferedReader buffer size
         int len;
         while((len = in.read(buff)) > 0){
             out.write(buff, 0, len);

src/zutil/io/NullOutputStream.java

@@ -0,0 +1,20 @@
+package zutil.io;
+
+import java.io.OutputStream;
+
+/**
+ * An OutputStream that does nothing but discard data. Similar to /dev/null
+ *
+ * Created by Ziver on 2016-07-08.
+ */
+public class NullOutputStream extends OutputStream {
+
+    @Override
+    public void write(int b) { }
+
+    @Override
+    public void write(byte b[]) { }
+
+    @Override
+    public void write(byte b[], int off, int len) { }
+}

src/zutil/io/NullWriter.java

@@ -0,0 +1,41 @@
+package zutil.io;
+
+import java.io.IOException;
+import java.io.Writer;
+
+/**
+ * An Writer that does nothing but discard data. Similar to /dev/null
+ *
+ * Created by Ziver on 2016-07-08.
+ */
+public class NullWriter extends Writer{
+
+    @Override
+    public void write(int c) { }
+    @Override
+    public void write(char cbuf[]) { }
+    @Override
+    public void write(char cbuf[], int off, int len) { }
+    @Override
+    public void write(String str) throws IOException { }
+    @Override
+    public void write(String str, int off, int len) { }
+
+    @Override
+    public Writer append(CharSequence csq) {
+        return this;
+    }
+    @Override
+    public Writer append(CharSequence csq, int start, int end) {
+        return this;
+    }
+    @Override
+    public Writer append(char c) {
+        return this;
+    }
+
+    @Override
+    public void flush() { }
+    @Override
+    public void close() { };
+}