Java packaged into jar| execute the main method in the JAR package

Java packaged into Jars

JAR-CVF [Name of jar package] [file to be packaged]

Execute the Main method in the JAR package

Java-jar ****.jar

Always runs the specified main method after execution, and if there are multiple main methods in the jar, how do you run the specified main method?
Try this with the following command:

Java-classpath ****.jar ****.****.classname [args]
"****.****" means "package name";
"ClassName" means "class name";
"[Args]" Represents an incoming parameter;

Run MANIFEST directly. The main method specified in MF:

Java-jar Mplus-service-jar-with-dependencies.jar

Runs the specified main method (no main method specified in MANIFEST.MF):

JAVA-CP Mplus-service-jar-with-dependencies.jar com.smbea.dubbo.bin.Console Start