What's wrong with my code?

package com.codegym.task.task09.task0902; /* Stack trace revisited */ public class Solution { public static void main(String[] args) throws Exception { method1(); } public static String method1() { method2(); //write your code here StackTraceElement[] stacktrace = Thread.currentThread().getStackTrace(); StackTraceElement e = stacktrace[4];//coz 0th will be getStackTrace so 1st String methodName = e.getMethodName(); System.out.println(methodName); return Thread.currentThread().getStackTrace()[0].getClassName(); } public static String method2() { method3(); //write your code here StackTraceElement[] stacktrace = Thread.currentThread().getStackTrace(); StackTraceElement e = stacktrace[3];//coz 0th will be getStackTrace so 1st String methodName = e.getMethodName(); System.out.println(methodName); return Thread.currentThread().getStackTrace()[1].getMethodName(); } public static String method3() { method4(); //write your code here StackTraceElement[] stacktrace = Thread.currentThread().getStackTrace(); StackTraceElement e = stacktrace[2];//coz 0th will be getStackTrace so 1st String methodName = e.getMethodName(); System.out.println(methodName); return Thread.currentThread().getStackTrace()[2].getMethodName(); } public static String method4() { method5(); //write your code here StackTraceElement[] stacktrace = Thread.currentThread().getStackTrace(); StackTraceElement e = stacktrace[1];//coz 0th will be getStackTrace so 1st String methodName = e.getMethodName(); System.out.println(methodName); return Thread.currentThread().getStackTrace()[3].getMethodName(); } public static String method5() { //write your code here StackTraceElement[] stacktrace = Thread.currentThread().getStackTrace(); StackTraceElement e = stacktrace[0];//coz 0th will be getStackTrace so 1st String methodName = e.getMethodName(); System.out.println(methodName); return Thread.currentThread().getStackTrace()[4].getMethodName(); } }