arthas/tutorials/katacoda/arthas-advanced-en/sc-sm.md

The commands in Arthas for finding loaded classes.

sc

The sc command finds all the classes that the JVM has loaded.

When search an interface, it also search all implementation classes. For example, look at all the Filter implementation classes:

sc javax.servlet.Filter{{execute T2}}

With the -d option, it will print out the specific information of the loaded classes, which is very convenient for finding the class loading problem.

sc -d javax.servlet.Filter{{execute T2}}

sc supports wildcards, such as searching for all StringUtils:

sc *StringUtils{{execute T2}}

sm

The sm command find the specific method of the class. such as:

sm java.math.RoundingMode{{execute T2}}

With -d option, it will print the deatils of the method.

sm -d java.math.RoundingMode{{execute T2}}

Find specific methods, such as the constructors:

sm java.math.RoundingMode <init>{{execute T2}}