How to change admin-console or jmx-console password in the property file in EAP 5

Issue

• How to change the password specified in $JBOSS_EAP_HOME/server/$PROFILE/conf/props/jmx-console-users.properties file?
• Can not login to jmx-console
• java.lang.SecurityException: [Warning] Authentication exception, principal=jboss
• How to create user to login in Admin-console ?
• Can we change Admin Password of Jboss console using command line?
• Do we need to restart the servers to reflect the values.
• What is recommendation of managing password of admin console, how soon need to change the password.
• How to create login credential for Admin Console, JMX-Console?
• Getting the following exception after changing the password in $JBOSS_EAP_HOME/server/$PROFILE/conf/props/jmx-console-users.properties:

javax.security.auth.login.FailedLoginException: Password Incorrect/Password Required
    at org.jboss.security.auth.spi.UsernamePasswordLoginModule.login(UsernamePasswordLoginModule.java:252)
    at org.jboss.security.auth.spi.UsersRolesLoginModule.login(UsersRolesLoginModule.java:152)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
...