diff --git a/bindings/java/src/net/hyperic/sigar/shell/ShellBase.java b/bindings/java/src/net/hyperic/sigar/shell/ShellBase.java
index 40ddf56e..d312dfba 100644
--- a/bindings/java/src/net/hyperic/sigar/shell/ShellBase.java
+++ b/bindings/java/src/net/hyperic/sigar/shell/ShellBase.java
@@ -586,7 +586,6 @@ public abstract class ShellBase
         throws PageFetchException
     {
         PrintStream out;
-        PageControl curPage;
         PageList data;
         boolean lineNumberMode;
 
diff --git a/bindings/java/src/net/hyperic/sigar/test/Proxy.java b/bindings/java/src/net/hyperic/sigar/test/Proxy.java
index 8d9549dc..ba862cc2 100644
--- a/bindings/java/src/net/hyperic/sigar/test/Proxy.java
+++ b/bindings/java/src/net/hyperic/sigar/test/Proxy.java
@@ -228,7 +228,6 @@ public class Proxy {
             String type = method.getName().substring(3);
 
             Class attrClass = method.getReturnType();
-            Class[] paramTypes;
 
             if (isNonStringArg(method)) {
                 continue;
@@ -406,6 +405,7 @@ public class Proxy {
         } catch (SigarException e) {
             String msg =
                 type + " failed: " + e.getMessage();
+            System.err.println(msg);
             return null;
         }
     }
@@ -426,11 +426,7 @@ public class Proxy {
         output("ourPid=" + ourPid);
 
         if (args.length >= 2) {
-            String type = args[0], arg = null, attr = args[args.length - 1];
-
-            if (args.length == 3) {
-                arg  = args[1];
-            }
+            String type = args[0], attr = args[args.length - 1];
 
             if (type.equals("leaktest")) {
                 int num = Integer.parseInt(args[1]);
@@ -448,6 +444,8 @@ public class Proxy {
                         throw new SigarException(e.getMessage());
                     } catch (InvocationTargetException e) {
                         throw new SigarException(e.getMessage());
+                    } finally {
+                        s.close();
                     }
                 }
 
diff --git a/bindings/java/src/net/hyperic/sigar/test/RunThreadCpu.java b/bindings/java/src/net/hyperic/sigar/test/RunThreadCpu.java
index bd6a8c17..f52c4d94 100644
--- a/bindings/java/src/net/hyperic/sigar/test/RunThreadCpu.java
+++ b/bindings/java/src/net/hyperic/sigar/test/RunThreadCpu.java
@@ -62,7 +62,7 @@ public class RunThreadCpu {
             for (int i=0; i<iter; i++) {
                 s += System.getProperty("java.home");
                 for (int j=0; j<s.length(); j++) {
-                    char c = s.charAt(j);
+                    s.charAt(j);
                 }
             }
             printTimes(start);
diff --git a/bindings/java/src/net/hyperic/sigar/test/TestFileInfo.java b/bindings/java/src/net/hyperic/sigar/test/TestFileInfo.java
index 8d4fe5df..30e9e785 100644
--- a/bindings/java/src/net/hyperic/sigar/test/TestFileInfo.java
+++ b/bindings/java/src/net/hyperic/sigar/test/TestFileInfo.java
@@ -69,14 +69,14 @@ public class TestFileInfo extends SigarTestCase {
         }
         else {
             try {
-                DirStat stats = sigar.getDirStat(file);
+                sigar.getDirStat(file);
                 assertTrue(false);
             } catch (SigarException e) {
                 assertTrue(true);
             }
         }
 
-        FileInfo link = sigar.getLinkInfo(file);
+        sigar.getLinkInfo(file);
     }
 
     public void testCreate() throws Exception {
diff --git a/bindings/java/src/net/hyperic/sigar/test/TestInvoker.java b/bindings/java/src/net/hyperic/sigar/test/TestInvoker.java
index b4c9d7aa..1e0d758c 100644
--- a/bindings/java/src/net/hyperic/sigar/test/TestInvoker.java
+++ b/bindings/java/src/net/hyperic/sigar/test/TestInvoker.java
@@ -82,7 +82,7 @@ public class TestInvoker extends SigarTestCase {
             SigarInvokerJMX invoker =
                 SigarInvokerJMX.getInstance(proxy, query[0]);
             try {
-                Object o = invoker.invoke(query[1]);
+                invoker.invoke(query[1]);
                 assertTrue(false);
             } catch (SigarException e) {
                 traceln(query[0] + ":" + query[1] + "=" + e.getMessage());
diff --git a/bindings/java/src/net/hyperic/sigar/test/TestNetIf.java b/bindings/java/src/net/hyperic/sigar/test/TestNetIf.java
index 39dd82b1..f258ccda 100644
--- a/bindings/java/src/net/hyperic/sigar/test/TestNetIf.java
+++ b/bindings/java/src/net/hyperic/sigar/test/TestNetIf.java
@@ -52,8 +52,7 @@ public class TestNetIf extends SigarTestCase {
         //test bogus arg results in exception (and not a segfault)
         try {
             traceln("testing bogus getNetInterfaceStat");
-            NetInterfaceStat ifstat =
-                sigar.getNetInterfaceStat("were switching to night vision");
+            sigar.getNetInterfaceStat("were switching to night vision");
             fail("switched to night vision");
         } catch (SigarException e) {
             //expected
@@ -62,8 +61,7 @@ public class TestNetIf extends SigarTestCase {
         //test bogus arg results in exception (and not a segfault)
         try {
             traceln("testing bogus getNetInterfaceConfig");
-            NetInterfaceConfig ifconfig =
-                sigar.getNetInterfaceConfig("happy meal");
+            sigar.getNetInterfaceConfig("happy meal");
             fail("unexpected treat in happy meal");
         } catch (SigarException e) {
             //expected
diff --git a/bindings/java/src/net/hyperic/sigar/test/TestProcExe.java b/bindings/java/src/net/hyperic/sigar/test/TestProcExe.java
index 47e048f3..f09f35ff 100644
--- a/bindings/java/src/net/hyperic/sigar/test/TestProcExe.java
+++ b/bindings/java/src/net/hyperic/sigar/test/TestProcExe.java
@@ -24,10 +24,9 @@ public class TestProcExe extends SigarTestCase {
 
             //assertTrue(new File(cwd).isDirectory());
 
-            File exeFile = new File(exe.getName());
             traceln("exe='" + exe.getName() + "'");
 
-            //assertTrue(exeFile.exists());
+            //assertTrue(new File(exeFile).exists());
         } catch (SigarNotImplementedException e) {
             //ok
         }
diff --git a/bindings/java/src/net/hyperic/sigar/test/TestThreads.java b/bindings/java/src/net/hyperic/sigar/test/TestThreads.java
index 23f87e49..d5c88f2c 100644
--- a/bindings/java/src/net/hyperic/sigar/test/TestThreads.java
+++ b/bindings/java/src/net/hyperic/sigar/test/TestThreads.java
@@ -27,8 +27,6 @@ public class TestThreads extends TestCase {
         boolean useGlobal = false;
 
         public void run() {
-            int expire = 1000;
-
             Sigar sigar;
             SigarProxy proxy;
 
diff --git a/bindings/java/src/net/hyperic/sigar/win32/test/TestPdh.java b/bindings/java/src/net/hyperic/sigar/win32/test/TestPdh.java
index ff3c8f5e..ead43a57 100644
--- a/bindings/java/src/net/hyperic/sigar/win32/test/TestPdh.java
+++ b/bindings/java/src/net/hyperic/sigar/win32/test/TestPdh.java
@@ -2,7 +2,6 @@ package net.hyperic.sigar.win32.test;
 
 import net.hyperic.sigar.test.SigarTestCase;
 import net.hyperic.sigar.win32.Pdh;
-import net.hyperic.sigar.win32.Win32Exception;
 
 public class TestPdh extends SigarTestCase {
 
@@ -39,9 +38,7 @@ public class TestPdh extends SigarTestCase {
         */
     }
 
-    public void testPdh () throws Exception {
-
-        Pdh pdh = new Pdh();
+    public void testPdh() throws Exception {
 
         String[] iface = Pdh.getKeys("Thread");