[gh-11363] Fix javac invocation and remove unnecessary quotes

- Use javac (not java) with -d option to compile
- Remove quotes that may cause issues in batch script

Author: gnodet

apache-maven/src/assembly/maven/bin/mvn.cmd

@@ -182,14 +182,14 @@ if not exist "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadJvmConfig
 rem Use Java to parse jvm.config to avoid batch script parsing issues with special characters
 rem This handles pipes, quotes, and other special characters correctly
 rem Compile the parser if not already compiled
-if not exist "%MAVEN_HOME%\bin\JvmConfigParser.class" (
-    "%JAVACMD%" -d "%MAVEN_HOME%\bin" "%MAVEN_HOME%\bin\JvmConfigParser.java" >nul 2>&1
+if not exist %MAVEN_HOME%\bin\JvmConfigParser.class (
+    %JAVACMD:java.exe=javac.exe% -d %MAVEN_HOME%\bin %MAVEN_HOME%\bin\JvmConfigParser.java >nul 2>&1
 )
 rem Run the parser and save output to temp file to avoid pipe interpretation issues
-set "JVM_CONFIG_TEMP=%TEMP%\mvn-jvm-config-%RANDOM%.txt"
-"%JAVACMD%" -cp "%MAVEN_HOME%\bin" JvmConfigParser "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" "%MAVEN_PROJECTBASEDIR%" > "%JVM_CONFIG_TEMP%" 2>nul
-set /p JVM_CONFIG_MAVEN_OPTS=<"%JVM_CONFIG_TEMP%"
-del "%JVM_CONFIG_TEMP%" 2>nul
+set JVM_CONFIG_TEMP=%TEMP%\mvn-jvm-config-%RANDOM%.txt
+%JAVACMD% -cp %MAVEN_HOME%\bin JvmConfigParser %MAVEN_PROJECTBASEDIR%\.mvn\jvm.config %MAVEN_PROJECTBASEDIR% > %JVM_CONFIG_TEMP% 2>nul
+set /p JVM_CONFIG_MAVEN_OPTS=<%JVM_CONFIG_TEMP%
+del %JVM_CONFIG_TEMP% 2>nul
 
 :endReadJvmConfig