--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/goodjava/io/NoMarkInputStream.java	Sun May 03 11:51:31 2020 -0600
@@ -0,0 +1,24 @@
+package goodjava.io;
+
+import java.io.InputStream;
+import java.io.FilterInputStream;
+import java.io.IOException;
+
+
+public class NoMarkInputStream extends FilterInputStream {
+
+	public NoMarkInputStream(InputStream in) {
+		super(in);
+	}
+
+	public final void mark(int readlimit) {}
+
+	public final void reset() throws IOException {
+		throw new IOException("mark/reset not supported");
+	}
+
+	public final boolean markSupported() {
+		return false;
+	}
+
+}