diff --git a/src/main/org/apache/tools/ant/taskdefs/Execute.java b/src/main/org/apache/tools/ant/taskdefs/Execute.java
index d26628db0..0a4b1d10c 100644
--- a/src/main/org/apache/tools/ant/taskdefs/Execute.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Execute.java
@@ -307,11 +307,13 @@ public class Execute {
             try {
                 return bos.toString("Cp1047");
             } catch (java.io.UnsupportedEncodingException e) {
+                //noop default encoding used
             }
         } else if (Os.isFamily("os/400")) {
             try {
                 return bos.toString("Cp500");
             } catch (java.io.UnsupportedEncodingException e) {
+                //noop default encoding used
             }
         }
         return bos.toString();
@@ -1151,4 +1153,4 @@ public class Execute {
         }
 
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/org/apache/tools/ant/taskdefs/ExecuteJava.java b/src/main/org/apache/tools/ant/taskdefs/ExecuteJava.java
index 7e8e8bde5..0cc8109e4 100644
--- a/src/main/org/apache/tools/ant/taskdefs/ExecuteJava.java
+++ b/src/main/org/apache/tools/ant/taskdefs/ExecuteJava.java
@@ -104,7 +104,7 @@ public class ExecuteJava implements Runnable, TimeoutObserver {
     public void setSystemProperties(CommandlineJava.SysProperties s) {
         sysProperties = s;
     }
-    
+
     /**
      * Permissions for the application run.
      * @since Ant 1.6
@@ -220,7 +220,7 @@ public class ExecuteJava implements Runnable, TimeoutObserver {
     public void run() {
         final Object[] argument = {javaCommand.getArguments()};
         try {
-            if(perm != null) {
+            if (perm != null) {
                 perm.setSecurityManager();
             }
             main.invoke(null, argument);
@@ -232,7 +232,7 @@ public class ExecuteJava implements Runnable, TimeoutObserver {
         } catch (Throwable t) {
             caught = t;
         } finally {
-            if(perm != null) {
+            if (perm != null) {
                 perm.restoreSecurityManager();
             }
             synchronized (this) {
@@ -258,4 +258,4 @@ public class ExecuteJava implements Runnable, TimeoutObserver {
     public synchronized boolean killedProcess() {
         return timedOut;
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/org/apache/tools/ant/taskdefs/ExecuteOn.java b/src/main/org/apache/tools/ant/taskdefs/ExecuteOn.java
index 0c55a9886..556088a1d 100644
--- a/src/main/org/apache/tools/ant/taskdefs/ExecuteOn.java
+++ b/src/main/org/apache/tools/ant/taskdefs/ExecuteOn.java
@@ -311,7 +311,7 @@ public class ExecuteOn extends ExecTask {
                 }
 
                 if (!"file".equals(currentType)) {
-                    String[] s = getDirs(base, ds);;
+                    String[] s = getDirs(base, ds);
                     for (int j = 0; j < s.length; j++) {
                         totalDirs++;
                         fileNames.addElement(s[j]);
@@ -615,4 +615,4 @@ public class ExecuteOn extends ExecTask {
             return new String[] {"file", "dir", "both"};
         }
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/org/apache/tools/ant/taskdefs/Exit.java b/src/main/org/apache/tools/ant/taskdefs/Exit.java
index 546623196..b85f80edd 100644
--- a/src/main/org/apache/tools/ant/taskdefs/Exit.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Exit.java
@@ -98,6 +98,9 @@ public class Exit extends Task {
         unlessCondition = c;
     }
 
+    /**
+     * Exits the actual build.
+     */
     public void execute() throws BuildException {
         if (testIfCondition() && testUnlessCondition()) {
             if (message != null && message.length() > 0) {
@@ -110,6 +113,7 @@ public class Exit extends Task {
 
     /**
      * Set a multiline message.
+     * @param msg the message to display
      */
     public void addText(String msg) {
         if (message == null) {
@@ -133,4 +137,4 @@ public class Exit extends Task {
         return getProject().getProperty(unlessCondition) == null;
     }
 
-}
+}
\ No newline at end of file
diff --git a/src/main/org/apache/tools/ant/taskdefs/Input.java b/src/main/org/apache/tools/ant/taskdefs/Input.java
index 9837af7f4..e6b61536f 100644
--- a/src/main/org/apache/tools/ant/taskdefs/Input.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Input.java
@@ -121,6 +121,7 @@ public class Input extends Task {
 
     /**
      * Set a multiline message.
+     * @param msg The message to be displayed.
      */
     public void addText(String msg) {
         message += getProject().replaceProperties(msg);
@@ -133,8 +134,8 @@ public class Input extends Task {
     }
 
     /**
-     * Actual method executed by jakarta-ant.
-     * @exception BuildException
+     * Actual method executed by ant.
+     * @throws BuildException
      */
     public void execute () throws BuildException {
         if (addproperty != null
@@ -163,4 +164,4 @@ public class Input extends Task {
         }
     }
 
-}
+}
\ No newline at end of file