void removeStudent() { System.out.print("\n Enter StudentID to remove: "); long id =sc.nextLong(); int pos = searchStudentID(id); if(pos == -1) System.out.println("\n ERROR: No student found having same ID: " + id); else courses.remove(pos); }   int searchStudentID(long studentID) { for(int c = 0; c < students.size(); c++) if(studentID == students.get(c).getId()) return c; return -1; } The code is supposed to prompt the user to enter a studentID and if it is in the records then it will be removed, but instead it just prompts me to enter and when i enter the ID, it just exits and goes back to the menu. is there something wrong with my code?

A counter variable is normally used in a program to keep track of the current count value.Create your own counter data type which is able to perform common counter operations such as increment (by one) the counter value and decrement (by one) the counter value. It is also able to set the counter to a specific value and to retrieve the counter value. The minimum value the counter can attain is zero, while the maximum value attained is stored in attribute maxValue. The class should have the following private members (attributes): (first picture) In the main program, test the workablity of your member functions by first setting an initial value to the counter. Display this value before proceeding. Then test other functions by randomly incrementing and decrementing the object’s value. Be sure to keep track of your actions. At the same time you should also make sure that your minimum value should not be less than zero. Once this is reached you will not be allowed to do further decrements.…

A good string is a string or a substring that starts with the character "g" and ends with the character "d". For a given string, write a program to find the number of "good substrings" of a given string. Note - A substring of a string is a contiguous subsequence of that string. The list of all non-empty substrings of the string "apple" would be "apple", "appl", "pple", "app", "ppl", "ple", "ap", "pp", "pl", "le", "a", "p", "p", "I", and "e" There will be multiple test cases running so the Input and Output should match exactly as provided. The base output variable result is set to a default value of -404 which can be modified. Additionally, you can add or remove these output variables. Input Format The first line contains the string S. Sample Input godk - denotes S Constraints 1 <= len|S| <= 100 Output Format The output contains a single integer denoting the number of good substrings of the given string. Sample Output 1 Explanation In the given string, only one substring "god" is good.…

a java assignment about 4 used defined exception using array loop based on real life scenario. (use only java)