StackOverflowError

What causes this error

A method calls itself recursively without a proper base case, or mutual recursion between methods creates an infinite loop. Each method call consumes stack space until the limit is reached.

How to fix it

Add or fix the base case in recursive methods. Convert recursion to iteration. Increase the stack size with -Xss JVM flag. Check for accidental infinite recursion in constructors or toString methods.

void recurse() { recurse(); }