From efd87c50e491d55cfc0dfd25d112ca02b49e513b Mon Sep 17 00:00:00 2001
From: XenoAmess <xenoamess@gmail.com>
Date: Wed, 26 Aug 2020 21:08:51 +0800
Subject: [PATCH] Fix a NPE created by the last pr. Sorry about that.

---
 .../java/net/sourceforge/pmd/cli/PMDCommandLineInterface.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pmd-core/src/main/java/net/sourceforge/pmd/cli/PMDCommandLineInterface.java b/pmd-core/src/main/java/net/sourceforge/pmd/cli/PMDCommandLineInterface.java
index 8642562b11..402b7726fd 100644
--- a/pmd-core/src/main/java/net/sourceforge/pmd/cli/PMDCommandLineInterface.java
+++ b/pmd-core/src/main/java/net/sourceforge/pmd/cli/PMDCommandLineInterface.java
@@ -60,7 +60,7 @@ public final class PMDCommandLineInterface {
     public static String buildUsageText(JCommander jcommander) {
         StringBuilder usage = new StringBuilder();
 
-        StringBuilder allCommandsDescription = null;
+        StringBuilder allCommandsDescription = new StringBuilder();
         if (jcommander != null && jcommander.getCommands() != null) {
             for (String command : jcommander.getCommands().keySet()) {
                 allCommandsDescription.append(jcommander.getCommandDescription(command)).append(PMD.EOL);
@@ -77,7 +77,7 @@ public final class PMDCommandLineInterface {
 
         fullText += supportedVersions() + PMD.EOL;
 
-        if (allCommandsDescription != null) {
+        if (allCommandsDescription.length() != 0) {
             fullText += "Optional arguments that may be put before or after the mandatory arguments: " + PMD.EOL
                     + allCommandsDescription + PMD.EOL;
         }