17)Write a method that tests to see whether a String begins with a capital letter, and also ends with a capital letter. The method should return the boolean value false if it is passed the String "Doctor", and should return true if passed the string "SeusS".
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- 6. Write a method that reads three strings from the keyboard. Although the strings are in no particular order, display the string that would be second if they were arranged lexicographically. 7. Write a method that reads a one-line sentence as input and then displays the following response: If the sentence ends with a question mark (?) and the input contains an even number of characters, display the word Yes. If the sentence ends with a question mark and the input contains an odd number of characters, display the word No. If the sentence ends with an exclamation point (!), display the word Wow. In all other cases, display the words You always say followed by the input string enclosed in quotes. Your output should all be on one line. Be sure to note that in the last case, your output must include quotation marks around the echoed input string. In all other cases, there are no quotes in the output. Your program does not have to check the input to see that the user has entered a…1. Write the following method that returns the intersecting point between two lines (p1, p2) and (p3, p4): public static Point2D getIntersecting Point ( Point 2D pl, Point2D p2, Point 2D p3, Point2D p4); The method returns null if the two lines are parallel. Write a test program that prompts the user to enter three points and displays the center point. Here is a sample run. (Hint: for finding the intersecting point between two lines, see Programming Exercise 8.31.) Enter x1, yl, x2, y2, x3, y3, x4, y4: 2 2 5 -1.0 4.0 2.0 -1.0 -2.0 The intersecting point is at (2.88889, 1.1111) Enter x1, yl, x2, y2, x3, y3, x4, y4: 2 2 7 6.0 4.0 2.0 -1.0 -2.0 The two lines are parallel1. Write a value-retuming method, isVowel, that returns the value true if a given character is a vowel, and otherwise retums false. Also write a program to test your method.
- 2. Write a method isPalidrome(String arg) that determines if a String is palindrome or not. Palindrome is when a String remains the same after reversing. The method should return boolean type. For example: MADAM is palindrome.This program will classify a string as one of the following: a palindrome, a repeated word, or “nothing special”. A word is considered repeated if it repeats only once in a string (e.g., “pizzapizza”). Some palindrome examples are: “racecar”, “aa”, and “aaa”. To determine if it is a palindrome, recommend you make use of the below method. Please make sure this program works for all cases and conditions. /** * This method will return a reversed version of the input string */ static String reverseString(String inStr) { String outStr = ""; if (inStr != null) { int startIndex = inStr.length()-1; for (int i=startIndex; i >= 0; i--) { outStr = outStr + inStr.charAt(i); } } return outStr; }This program will classify a string as one of the following: a palindrome, a repeated word, or “nothing special”. A word is considered repeated if it repeats only once in a string (e.g., “pizzapizza”). Some palindrome examples are: “racecar”, “aa”, and “aaa”. To determine if it is a palindrome, recommend you make use of the below method. Please make sure this program works for all cases and conditions. Java /** * This method will return a reversed version of the input string */ static String reverseString(String inStr) { String outStr = ""; if (inStr != null) { int startIndex = inStr.length()-1; for (int i=startIndex; i >= 0; i--) { outStr = outStr + inStr.charAt(i); } } return outStr; }
- You are responsible for adding the appropriate testing code to your main. a. The getValedictorian method returns the valedictorian of the class, that is the student with the highest grade point average. Implement this new method. b. The getHonorsPercent method returns the percentage of students in the class who are in the honors program. Use 3.75 as the cutoff GPA. Implement this method. Also print the list of students, by using the isHonor method, in the Honors program. c. An alternate implementation for the School class is being considered, in which the students are stored in an ArrayList instead of an array. Show how the declaration of the data field students would look in this alternate design. MAIN CLASS: import java.util.ArrayList; public class Main { public static void main(String[] args) { System.out.println("Unit07Project2 by Your Name"); System.out.println(); int size = 10; School onw = new School(size); /* Add the code…3) The following method should return true if the int parameter is even and either positive or 0, and false otherwise.Which set of code should you use to replace … so that the method works appropriately?public boolean question3(int x) { … }a) if (x = = 0) return true; else if (x < 0) return false; else return question3(x – 1);b) if (x = = 0) return false; else if (x < 0) return true; else return question3(x – 1);c) if (x = = 0) return true; else if (x < 0) return false; else return question3(x – 2);d) if (x = = 0) return false; else if (x < 0) return true; else return question3(x – 2);e) return(x = = 0);Do not use regular expressions in your solution for this exercise. Write a program that checks to see if an input password is valid or not. In this exercise, a valid password has the following characteristics: It contains at least eight characters. It contains at most 12 characters. It contains only alphabetic characters, digits and the underscore (‘_’) character. It does not start with a digit. It has a mix of upper-case and lower-case characters. Your class must contain the following method: public static String checkPassword(String input) This method receives a possible password as input and returns only the String“OK” if the password is valid. If the password is not valid then you can return the reason(s) for that as the return value. This is not a part of the requirements, however, and you don’t need to do that. You can simply return null for an invalid password.
- TRUE OR FALSE. Write TRUE if the statement is true, otherwise, writeFALSE.If P and Q are true statements and R is a false statement, then the statement (P ∧ Q) ∨ R ⇒ (¬Q) is true.Create a program that will count the number of numeric characters in an input string. The program should be able to ask the user for the input string and should be able to display the number of numeric characters on the screen. For this exercise, you should create your class to handle the different operations. Remember that any input/output operations should be done in the main method while all calculations should be done inside the class. Remember that you need to apply encapsulation in your class. Sample Output: Enter a string: Hello 123 Number of numeric characters: 3/** 2. Write the method named countChar() * You are given a String str, and a char ch. Return the number of times that ch appears inside str, but ignore case. * * * Oh, and you can't use the classification methods in the Character class. Use plain if statements, remembering that you can check if ch is lowercase by checking if it is between lowercase 'a' and lowercase 'z', inclusive. Likewise, check if between 'A' and 'Z' for capital. To convert lowercase to uppercase, subtract the difference between lowercase 'a' and uppercase 'A' ('a'-'A') from the lowercase character. Add this difference to convert from uppercase to lowercase. * * * * * * Examples: countChar("Abcdefg", 'a') returns 1 countChar("xxXx", 'x') returns 4 countChar("", 'q') returns 0 * * @param str the String to search through @param ch the char to count (not case sensitive) @return the count of ch in str * */ public int countChar(String str, char ch) { // Complete the countChar method here }