2. TestScores Class Custom Exception Write an exception class named InvalidTestScore. Modify the TestScores class you wrote in Programming Challenge 1 so that it throws an InvalidTestScore exception if any of the test scores in the array are invalid.

public class SeperateDuplicates { public static void main(String[ args) { System.out.printIn(seperateDuplicatesChars("Hello")); System.out.printin(seperateDuplicatesChars ("Bookkeeper"')); System.out.printin(seperateDuplicatesChars("Yellowwood door"')); System.out.printin(seperateDuplicatesChars("Chicago Cubs")); */ public static String seperateDuplicatesChars(String str) { //To be completed } }

Lab 9 C    balance the same, y, n, why?   class CheckingAct {   . . . .   private int balance;     public void processCheck( int  amount  )   {                              int charge;     if ( balance < 100000 )       charge = 15;     else       charge = 0;     balance =  balance -  amount  - charge  ;       // change the local copy of the value in "amount"     amount = 0 ;   } }   public class CheckingTester {     public static void main ( String[] args )   {     CheckingAct act;     int check = 5000;     act = new CheckingAct( "123-345-99", "Your Name",  100000 );                System.out.println( "check:" + check );     // prints "5000"       // call processCheck with a copy of the value 5000     act.processCheck( check );                   System.out.println( "check:" + check );     // prints "5000" --- "check" was not changed   } }

1 a. is the amount the same, yes or no, why? public class CheckingAct {   private String actNum;   private String nameOnAct;   private int    balance;     . . . .   public void processDeposit( int amount )   {        balance = balance + amount ;   }     // modified toString() method   public String toString()   {     return  "Account: " + actNum + "\tName: " + nameOnAct +             "\tBalance: " +  amount ;   }   }   b.    public class CheckingAct {   private String actNum;   private String nameOnAct;   private int    balance;     . . . .     public void  processDeposit( int amount )   { // scope of amount starts here     balance = balance + amount ;          // scope of amount ends here   }     public void processCheck( int amount )   { // scope of amount starts here     int charge;       incrementUse();     if ( balance < 100000 )       charge = 15;     else       charge = 0;       balance =  balance - amount - charge  ;     // scope of amount ends here   }   }   c. is the…

Code: import java.util.Scanner;public class ReceiptMaker { public static final String SENTINEL = "checkout";public final int MAX_NUM_ITEMS;public final int TAX_RATE;private String itemNames;private double [] itemPrices;private int numItemsPurchased; public ReceiptMaker(){MAX_NUM_ITEMS = 10;TAX_RATE = .0875; itemNames = new String[MAX_NUM_ITEMS];itemPrices = new double[MIN_NUM_ITEMS];numItemsPurchased = 0;}public ReceiptMaker(int maxNumItems, double taxRate){if(isValid(maxNumItems)){MAX_NUM_ITEMS = maxNumItems;}else{MAX_NUM_ITEMS= 10;}if(isValid(taxRate)){TAX_RATE = taxRate;}else{TAX_RATE = .0875;}itemNames = new String[MAX_NUM_ITEMS];itemPrices = new double[MAX_NUM_ITEMS];numItemsPurchased = 0;}public void greetUser(){System.out.println("Welcome to the "+MAX_NUM_ITEMS+" items or less checkout line");}public void promptUserForProductEntry(){System.out.println("Enter item #"+(numItemsPurchased+1)+"'s name and price separated by a space, or enter ""+SENTINEL+"\" to end transaction…

Statement that increases numPeople by 5. Ex: If numPeople is initially 10, the output is: There are 15 people.

Java

public class arrayOutput { public static void main (String [] args) { final int NUM_ELEMENTS = 3; int[] userVals = new int [NUM_ELEMENTS]; int i; int sumVal; userVals [0] = 3; userVals [1] = 5; userVals [2] = 8; Type the program's output sumVal = 0; for (i = 0; i < userVals.length; ++i) { sumVal= sumVal + userVals [i]; System.out.println (sumVal); } ? ? ??

public class KnowledgeCheckTrek {     public static final String TNG = "The Next Generation";     public static final String DS9 = "Deep Space Nine";     public static final String VOYAGER = "Voyager";     public static String trek(String character) {         if (character != null && (character.equalsIgnoreCase("Picard") ||                 character.equalsIgnoreCase("Data"))) {  // IF ONE             return TNG;         } else if (character != null && character.contains("7")) { // IF TWO             return VOYAGER;         } else if ((character.contains("Quark") || character.contains("Odo"))) { // IF THREE             return DS9;         }         return null;     }     public static void main(String[] args) {         System.out.println(trek("Captain Picard"));         System.out.println(trek("7 of Nine"));         System.out.println(trek("Odo"));         System.out.println(trek("Quark"));         System.out.println(trek("Data").equalsIgnoreCase(TNG));…

using System; class Program { publicstaticvoid Main(string[] args) { int number = 1; while (number <= 88) { Console.WriteLine(number); number = number + 2; } int[] randNo = newint[88]; Random r = new Random(); int i=0; while (number <= 88) { randNo[i] = number; number+=1; i+=1; } for (i = 0; i < 3; i++) { Console.WriteLine("Random Numbers between 1 and 88 are " + randNo[r.Next(1, 88)]); } } }     this code counts from 1-88 in odds and then selects three different random numbers. it keeps choosing 0 as a random number everytime. how can that be fixed?