package err00j;

import java.lang.UnsupportedOperationException;

class MethodCallStack {

public static void main(String[] args) {

System.out.println("Enter main()");

try {

methodA();

}

catch (UnsupportedOperationException uoe) {

uoe.printStackTrace();

}

System.out.println("Exit main()");

}

private static void methodA() {

System.out.println("Enter methodA()");

try {

methodB();

}

finally {

System.out.println("methodA() finally block");

}

System.out.println("Exit methodA()");

}

private static void methodB() {

System.out.println("Enter methodB()");

try {

methodC();

}

finally {

System.out.println("methodB() finally block");

}

System.out.println("Exit methodB()");

}

private static void methodC() {

System.out.println("Enter methodC()");

try {

methodD();

}

finally {

System.out.println("methodC() finally block");

}

System.out.println("Exit methodC()");

}

private static void methodD() {

System.out.println("Enter methodD()");

throw new UnsupportedOperationException();

// unreachable

}

}