This is in JAVA and I am having issues followng any of this.

Insert References 9+ Share Design Layout Mailings Home Insert Review >> Lesson 4.1 Assignment 4A Name: Using an online code editor: 1. Write a method to calculate mathematical function f(x,y) = (x + y Lab In thi the sc Tech To con Proces 1. // YC 2. Write a method to calculate mathematical function 1 class 72 I 3. The monthly payment of a mortgage of months with monthly interest rater for a principal is given by the mathematical formula pr(1) (1 + r)-1 Write a method to calculate the monthly payment 2. Take a screenshe Assignmd Submissie Any citati when nam example: 4 Write a method printStrings to print a string three times in the lines with increasing indentation. For example.print(Hello will print Hello Hello Hello Setibe a string of odd length Write a method thing to return a string ofs with the character will turn the Proram 154 words Page 1 of 2 + 97% 144 words N XO W 17 pr(1+r)" CE (1+r)-1 Write a method to calculate the monthly payment. 4. Write a method print3(String s) to print a string three times in three lines with increasing indentation. For example, print3("Hello"); will print Hello Hello Hello I 5. Lets be a string of odd length. Write a method remove(String s) to return a substring of s with the center character removed. For example, remove("Program") will return the string "Procam". 6. A string variable fulName represents a full name such as "Doe, John". Write a method sheetName(String fullName) to return a string of first initial and last name, e.g., "). Doe