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JEP 259: Stack-Walking API defines an efficient standard API for stack walking that allows the easy filtering of and lazy access to stack trace information. This API supports short walks that stop at a stack frame matching given criteria, and also supports long walks that traverse the entire stack. This post introduces you to the Stack-Walking API.

From StackTraceElement to StackWalker

Java 1.4 introduced the java.lang.StackTraceElement class to describe an element representing a stack frame in a stack trace. This class provides methods that return the fully qualified name of the class containing the execution point represented by this stack trace element along with other useful information. Java 1.4 also introduced the StackTraceElement[] getStackTrace() method to the java.lang.Thread and java.lang.Throwable classes. This method respectively returns an array of stack trace elements representing the invoking thread's stack dump and provides programmatic access to the stack trace information printed by printStackTrace().

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