Fix compiler warnings

src/main/java/org/apache/commons/logging/LogSource.java

@@ -136,7 +136,7 @@ public class LogSource {
      * @param clazz a Class.
      * @return a {@code Log} instance.
      */
-    static public Log getInstance(final Class clazz) {
+    static public Log getInstance(final Class<?> clazz) {
         return getInstance(clazz.getName());
     }
 

src/main/java/org/apache/commons/logging/impl/Log4jApiLogFactory.java

@@ -194,7 +194,7 @@ public final class Log4jApiLogFactory extends LogFactory {
     }
 
     @Override
-    public Log getInstance(final Class clazz) {
+    public Log getInstance(final Class<?> clazz) {
         return getInstance(clazz.getName());
     }
 

src/main/java/org/apache/commons/logging/impl/LogFactoryImpl.java

@@ -823,7 +823,7 @@ public class LogFactoryImpl extends LogFactory {
      *  instance cannot be returned
      */
     @Override
-    public Log getInstance(final Class clazz) throws LogConfigurationException {
+    public Log getInstance(final Class<?> clazz) throws LogConfigurationException {
         return getInstance(clazz.getName());
     }
 

src/main/java/org/apache/commons/logging/impl/Slf4jLogFactory.java

@@ -278,7 +278,7 @@ public final class Slf4jLogFactory extends LogFactory {
     }
 
     @Override
-    public Log getInstance(final Class clazz) throws LogConfigurationException {
+    public Log getInstance(final Class<?> clazz) throws LogConfigurationException {
         return getInstance(clazz.getName());
     }
 

src/test/java/org/apache/commons/logging/tccl/custom/MyLogFactoryImpl.java

@@ -17,23 +17,41 @@
 
 package org.apache.commons.logging.tccl.custom;
 
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
 public class MyLogFactoryImpl extends LogFactory {
+
     @Override
-    public Object getAttribute(final String name) { return null; }
+    public Object getAttribute(final String name) {
+        return null;
+    }
+
     @Override
-    public String[] getAttributeNames() { return null; }
+    public String[] getAttributeNames() {
+        return null;
+    }
+
     @Override
-    public Log getInstance(final Class clazz) { return null; }
+    public Log getInstance(final Class<?> clazz) {
+        return null;
+    }
+
     @Override
-    public Log getInstance(final String name) { return null; }
+    public Log getInstance(final String name) {
+        return null;
+    }
+
     @Override
-    public void release() {}
+    public void release() {
+    }
+
     @Override
-    public void removeAttribute(final String name) {}
+    public void removeAttribute(final String name) {
+    }
+
     @Override
-    public void setAttribute(final String name, final Object value) {}
+    public void setAttribute(final String name, final Object value) {
+    }
+
 }