import java.util.Set;

import static java.lang.StackWalker.Option.RETAIN_CLASS_REFERENCE;

import static java.lang.StackWalker.Option.SHOW_HIDDEN_FRAMES;

/**

* Created by mtumilowicz on 2019-02-18.

*/

class StackWalking {

void m1() {

m2();

}

private void m2() {

m3();

}

private void m3() {

System.out.println("---");

System.out.println("stack from m3():");

StackWalker.getInstance(Set.of(RETAIN_CLASS_REFERENCE, SHOW_HIDDEN_FRAMES), 4)

.walk(frames -> {

frames.limit(4).forEach(System.out::println);

return null;

});

System.out.println("---");

m4();

}

private void m4() {

System.out.println("---");

System.out.println("stack from m4():");

StackWalker.getInstance(Set.of(RETAIN_CLASS_REFERENCE, SHOW_HIDDEN_FRAMES), 5)

.walk(frames -> {

frames.limit(5).forEach(System.out::println);

return null;

});

System.out.println("---");

}

}