more classpath progress

classpath/java/io/StringReader.java

@@ -0,0 +1,23 @@
+package java.io;
+
+public class StringReader extends Reader {
+  private final String in;
+  private int position = 0;
+
+  public StringReader(String in) {
+    this.in = in;
+  }
+  
+  public int read(char[] b, int offset, int length) throws IOException {
+    if (length > in.length() - position) {
+      length = in.length() - position;
+      if (length <= 0) {
+        return -1;
+      }
+    }
+    in.getChars(position, length, b, offset);
+    return length;
+  }
+
+  public void close() throws IOException { }
+}