I would like to know where can I download the jar file of Maven plugin. Such as, maven-enforcer-plugin, maven-jar-plugin.
It is because I need the jar file for building a software.
Are you using these within Maven? Maven should download them automatically for you. If you are building a project that needs to use Maven jars for some other purpose then:
1.) I still suggest you create a Maven project, list the plugin jars as dependencies and let Maven get them