add Closeable/Flushable interfaces

apps/addressbook/java/src/net/i2p/addressbook/ConfigIterator.java

@@ -22,6 +22,7 @@
 package net.i2p.addressbook;
 
 import java.io.BufferedReader;
+import java.io.Closeable;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
@@ -41,7 +42,7 @@ import java.util.NoSuchElementException;
  *
  *  @since 0.8.7
  */
-class ConfigIterator implements Iterator<Map.Entry<String, String>> {
+class ConfigIterator implements Iterator<Map.Entry<String, String>>, Closeable {
 
     private BufferedReader input;
     private ConfigEntry next;

apps/i2psnark/java/src/org/klomp/snark/Storage.java

@@ -20,6 +20,7 @@
 
 package org.klomp.snark;
 
+import java.io.Closeable;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -50,7 +51,7 @@ import net.i2p.util.SystemVersion;
 /**
  * Maintains pieces on disk. Can be used to store and retrieve pieces.
  */
-public class Storage
+public class Storage implements Closeable
 {
   private final MetaInfo metainfo;
   private final List<TorrentFile> _torrentFiles;

apps/sam/java/src/net/i2p/sam/SAMMessageSession.java

@@ -9,6 +9,7 @@ package net.i2p.sam;
  */
 
 import java.io.ByteArrayInputStream;
+import java.io.Closeable;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.Properties;
@@ -31,7 +32,7 @@ import net.i2p.util.Log;
  *
  * @author human
  */
-abstract class SAMMessageSession {
+abstract class SAMMessageSession implements Closeable {
 
     protected final Log _log;
     private I2PSession session;

apps/streaming/java/src/net/i2p/client/streaming/impl/PacketQueue.java

@@ -1,5 +1,6 @@
 package net.i2p.client.streaming.impl;
 
+import java.io.Closeable;
 import java.io.IOException;
 import java.util.Iterator;
 import java.util.Map;
@@ -25,7 +26,7 @@ import net.i2p.util.SimpleTimer2;
  *<p>
  * MessageOutputStream -> ConnectionDataReceiver -> Connection -> PacketQueue -> I2PSession
  */
-class PacketQueue implements SendMessageStatusListener {
+class PacketQueue implements SendMessageStatusListener, Closeable {
     private final I2PAppContext _context;
     private final Log _log;
     private final ByteCache _cache = ByteCache.getInstance(64, 36*1024);

apps/streaming/java/src/net/i2p/client/streaming/impl/PcapWriter.java

@@ -1,8 +1,10 @@
 package net.i2p.client.streaming.impl;
 
 import java.io.BufferedOutputStream;
+import java.io.Closeable;
 import java.io.File;
 import java.io.FileOutputStream;
+import java.io.Flushable;
 import java.io.IOException;
 import java.io.OutputStream;
 
@@ -41,7 +43,7 @@ import net.i2p.data.DataHelper;
  *
  *  @since 0.9.4
  */
-public class PcapWriter {
+public class PcapWriter implements Closeable, Flushable {
 
     /** big-endian, see file format ref - 24 bytes */
     private static final byte[] FILE_HEADER = { (byte) 0xa1, (byte) 0xb2, (byte) 0xc3, (byte) 0xd4,