Provide a description for the readFromFile method.
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Provide a description for the readFromFile method.
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- 4. Say we wanted to get an iterator for an ArrayList and use it to loop over all items and print them to the console. What would the code look like for this? 5. Write a method signature for a method called foo that takes an array as an argument. The return type is void. 6. What is the difference between remove and clear in ArrayLists.Complete the searching and sorting algorithms in ModuleOne and ModuleTwo of the modules package. Test all sorting algorithms in AlgorithmsTest. You must build everything from scratch and cannot use any methods in other Java packages to make your algorithm. Restrictions : All classes/methods must be made by you. You are ONLY allowed to use java.util.Arrays.toString method You are NOT allowed to use any other the Java API Library classes/methods.Please read the instructions carefully and keep in mind of the bolded phrases. You are NOT ALLOWED to use HashSet Create a project in NetBeans and name the project Hw06. The class will contain the following static methods: reverseS – A method that displays a string reversely on the console using the following signature: publicstaticvoidreverseS(Strings) printSub1 – print all substrings of a string (duplicated substrings are allowed, but loops are not allowed). The method signature: public static void printSub1(String s) printSub2 – print all substrings of a string (duplicated substrings are not allowed, but loops are allowed). The method signature: public static void printSub2(String s) Note: All methods should be RECURSIVE. Any predefined classes that are based on Set are not allowed. In the main method, read a string from the user and output the reversed string and substrings to the screen: Sample Run: Please input a string: abcdThe reversed string: dcbaThe substrings…
- 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…Answer the given question with a proper explanation and step-by-step solution. USING JAVA: ---Sorting the Invoices via dates--- Another error that will still be showing is that there is not Comparable/compareTo() method setup on the Invoice class file. That is something you need to fix and code. Implement the use of the Comparable interface and add the compareTo() method to the Invoice class. The compareTo() method will take a little work here. We are going to compare via the date of the invoice. The dates of the Invoice class are by default saved in a MM-DD-YYYY format. So they have a dash '-' between each part of the date. So you will need to split the date of the current invoice AND split the date of the object sent to the method. We have three things to compare against here. First we need to check the year. If the years are the same then you should go another step forward and compare the months. If the months are the same then you will lastly have to compare the day. Use whatever…task_6 Change Summation Integers problem to Finding the minimumproblem. Make sure you properly wrote/updated all text messages, method names,and math calculations.Hint: You can use java.lang.Math.min() method.Example: System.out.printf("The min of the integers %4d and %4d and %4dis %7d\n", a, b, c, MinTest(a, b, c));Submit the source code files (.java files) and the console output screenshots
- In the Utils class provided to you in this exercise, please fill in the details for a method called swapArray(). You can either upload a file or use the Edit tab to submit your work The VPL tester will pass an arbitrary array of type integer to your method, along with the value of the locations in the array of two values that need to be swapped (exchanged). For instance, in the illustration below, the method swapArray is told to swap the values in positions 0 and 2 of an array made up of (10, 20, 30, 40, 50}. The three input parameters to the method are the array, as well as the two array indices (i and j) that control which elements to swap. public class utils { public static woid wap Array (int[] the Array, int i ,int j){ ex: lo 20 30 40 50 write stuff here JwapHello! I am having a problem trying to code a addNode method implementation to my program. I am trying to only get it to sort the lines alphabetically and then the categories will be sorted from the way it is first read in the input text file.So an input file would look like this: Name Clovis Bagwell Interesting The quick brown fox jumped over the lazy dog. Interesting Shake rattle and roll. Name Archibald Beechcroft and the output file should look like this: Name Archibald Beechcroft Clovis Bagwell Interesting Shake rattle and roll. The quick brown fox jumped over the lazy dog. My addNode code keeps organizing all of the categories and the lines in alphabetical order when categories is supposed to be organized by the way they are first read in the text file, and the lines under it are alphabetical..If the name of getBalance is changed to getAmount, does the return statement in the body of the method also need to be changed for the code to compile? Try it out within BlueJ. What does this tell you about the name of an accessor method and the name of the field associated with it?
- Thank you very much for explaining the absyract concept, it was very helpful and easier to understanc after you explained it. Today we are asked to modify the GridWriter class by adding additional collection style functionality, to throw an exception in case of an error. The GridWriter class should get two new methods: public int size() should return the number of GridItems stored in the GridWriter public GridItem get(int index) should return the stored GridItems by index. Consider the following code. The first line creates a GridWriter object. Then two items are added to the GridWriter. The index of the items will be 0, and 1. Notice how the for loop uses the size and get methods to print out the areas of the two items GridWriter gw = new GridWriter(40, 50); gw.add(new MyCircle(10, 10, 9)); gw.add(new MyRectangle(40, 0, 10, 10)); for (int i = 0; i < gw.size(); i++) { System.out.println(gw.get(i).getArea()); } Once you have these two methods working you…For each of the operators and methods listed above, explain what they do (experiment with code in Python, DON’T LOOK IT UP, and be sure to turn in the code that you used to figure it out (use comments to tell us which method or operator you are figuring out in each part of your code). • my_list.count(VALUE) • my_list.pop(VALUE) • my_list.reverse() • my_list.append(NEW_value) • my_list + my_next_list • len(my_list) 2- Explain what the following piece of code do. Write your answer in comments. my_list= ["twinkle", "twinkle", "little", "star", 4] print(my_list[slice(0, 3, 2)])Fill in the missing code for the following "intercept" method, located within an "InterceptTokenService” class. This method must add an “Authorization” header to the request with the value: "JWT token”, where token is the current, saved token. NOTE: You may assume that an AuthService (injected into the class as "auth") provides a means of fetching the correct token using a "getToken()" method. intercept(request: HttpRequest , next: HttpHandler): Observable { // … your code here }
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