Right way of assigning JVM parameters in JBOSS eap 7.1

Question

Can anyone please tell if the below syntax is correct(specifically double quotes)?Or there should not be any quotes after $JAVA_OPTS at the beginning of "-XX:+UseG1GC ?

 JAVA_OPTS="$JAVA_OPTS "-XX:+UseG1GC -Xloggc:/opt/jboss-eap/gc_logs/jvm-gc.log  -XX:+PrintGCDetails   -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps  -XX:+PrintTenuringDistribution -XX:+PrintHeapAtGC  -XX:+PrintGCApplicationStoppedTime  -XX:PrintFLSStatistics=1""

Answer 1

There should not be any quotes at the beginning of -XX:+UseG1GC . Your final JAVA_OPTS will be

 JAVA_OPTS="$JAVA_OPTS -XX:+UseG1GC -Xloggc:/opt/jboss-eap/gc_logs/jvm-gc.log  -XX:+PrintGCDetails   -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps  -XX:+PrintTenuringDistribution -XX:+PrintHeapAtGC  -XX:+PrintGCApplicationStoppedTime  -XX:PrintFLSStatistics=1"