java questions. will leave a like

A myfile.txt has the following lines of text, with each line of text having a new line after it: one two Given the following snippet of codsis File output = new File("myfile.txt"); try \{ Files.writestring(output.toPath(), "three ", Standardopenoption. CREA Standardopenoption.APPEND); \} catch(IOException ex) \{ System.out.println("Error: " + ex.getMessage()); \} What would the myfile.txt contain after the code is run? three one two three one two one twothree class Rectangle implements polygon \{ public void displayArea() \{ systen.out.println("The area of a rectangle is calculated by width * height."); \} What code segment would the interface need to look like? Interface polygon \{ public string displayArea(); \} interface Polygon public void displayArea(); public vold displayperimeter(); ) interface Polygon \{ public void displayArea(); 3 interface Polygon \{ public void displayArea() \& Systen,out.printin( "woof woof"); \} Given the following dass, what sets of statements would have the end result of the myStudent instance having the studentname as teststudent letterGrade as test as B and then outputting the studentname and letterGrade? student aystudent = new student(); nystudent. setstudentwane("teststudent"); mystudent.setletterarade(" B") ); systen, out.printin("Student: " + nystudent,getstudentwane( ) ); Systen.out.printin("Lettergrade: "+ nystudent, getLetterarade()); student mystudent = new student("teststudent", " D "); Systen. out.printlin("student: " + mystudent, studentnane); system.out.printlin("LetterGrade: " + nystudent.1etterGrade); student mystudent = new student("teststudent"," "e"); System. out.printin("student: " + nystudent.getstudentwame()); systen, out.printlin("LetterGrade: " + mystudent.getLetterGrade()); student mystudent = new student("teststudent", " a "); system. out.printin("Student: " + mystudent, studentnane()); system.out.printin("LetterGrade : " + mystudent, 1etterGrade())