Better parameter name and comment

Author: garydgregory

src/main/java/org/apache/commons/io/input/ProxyReader.java

@@ -40,11 +40,11 @@ public abstract class ProxyReader extends FilterReader {
     /**
      * Constructs a new ProxyReader.
      *
-     * @param proxy  the Reader to delegate to
+     * @param delegate  the Reader to delegate to
      */
-    public ProxyReader(final Reader proxy) {
-        super(proxy);
-        // the proxy is stored in a protected superclass variable named 'in'
+    public ProxyReader(final Reader delegate) {
+        // the delegate is stored in a protected superclass variable named 'in'
+        super(delegate);
     }
 
     /**

src/main/java/org/apache/commons/io/output/ProxyOutputStream.java

@@ -37,11 +37,11 @@ public class ProxyOutputStream extends FilterOutputStream {
     /**
      * Constructs a new ProxyOutputStream.
      *
-     * @param proxy  the OutputStream to delegate to
+     * @param delegate  the OutputStream to delegate to
      */
-    public ProxyOutputStream(final OutputStream proxy) {
-        super(proxy);
-        // the proxy is stored in a protected superclass variable named 'out'
+    public ProxyOutputStream(final OutputStream delegate) {
+        // the delegate is stored in a protected superclass variable named 'out'
+        super(delegate);
     }
 
     /**

src/main/java/org/apache/commons/io/output/ProxyWriter.java

@@ -33,11 +33,11 @@ public class ProxyWriter extends FilterWriter {
     /**
      * Constructs a new ProxyWriter.
      *
-     * @param proxy  the Writer to delegate to
+     * @param delegate  the Writer to delegate to
      */
-    public ProxyWriter(final Writer proxy) {
-        super(proxy);
-        // the proxy is stored in a protected superclass variable named 'out'
+    public ProxyWriter(final Writer delegate) {
+        // the delegate is stored in a protected superclass variable named 'out'
+        super(delegate);
     }
 
     /**