Thread: Is there any intelligent person in the Java programming? plz

Please help me to solve this: (
Only three questions....



The questions given below are based on the lecture notes, and are intended to familiarize you with concepts of arrays, ArrayList and inheritance.


1. Arrays
Write a program that read in 16 values from the keyboard and store them into a two dimension array (myArray). The program then calculate the sum of every row elements and every column elements an put this sum into elements of two arrays (one for the rows – rowSum and the other for columns- colSum ) ,then the program print the three arrays.



2. ArrayList class

You are to write a simple names book program. A names book contains names of your friends. Store your names book as an ArrayList with entries contains strings that represent the names. Your program must tell you how many friends you have and which one of them has the longest name.


3. Inheritance

Design and draw the UML class diagram of a set of classes that define the employees of a Hospital, the classes are:
HospitalPerson , Doctor and Nurse.
Where HospitalPerson is a supper class, Doctor and Nurse are subclasses.

Design your classes to satisfy the following requirements:
1. Each HospitalPerson has a name and an idNumber.
2. A Doctor has in addition a specialty attribute, while a Nurse has a
maxDutyHours attribute.
3. We want to have a special print (output information) as following:
a. The name and idNumber of a HospitalPerson works for the Hospital.
b. The specialty of a Doctor.
c. The maxDutyHours of a Nurse.

Originally Posted by alaseier

is right?

Which is the question that asks you to put 16 numbers into a one-dimensional array?

Originally Posted by dlorde

Which is the question that asks you to put 16 numbers into a one-dimensional array?

Write a program that read in 16 values from the keyboard and store them into a two dimension array (myArray).

Originally Posted by alaseier

Write a program that read in 16 values from the keyboard and store them into a two dimension array (myArray).

No, that's a question about a two dimensional array, not a one dimensional array. Notice the difference?

how can solve that???

Link --> The Java™ Tutorials

db

int[][] TwoD = new int[50][50];

sorry, i aint smart. cant help you. HAHA!

Originally Posted by alaseier

tell me of now is rigth.

Are you even testing this? Just use System.out.println as debugging statements. Print the array and see if thats what you want. If you still can't get it, then read some of the Java tutorials, their actually kinda good

Originally Posted by alaseier

Please help me to solve this: (
Only three questions....



The questions given below are based on the lecture notes, and are intended to familiarize you with concepts of arrays, ArrayList and inheritance.


1. Arrays
Write a program that read in 16 values from the keyboard and store them into a two dimension array (myArray). The program then calculate the sum of every row elements and every column elements an put this sum into elements of two arrays (one for the rows – rowSum and the other for columns- colSum ) ,then the program print the three arrays.

What kind of array? char, int, long, String, double, short, float, class, etc?

int n ;
System.out.println("Enter the number of rows. ");
n = console.nextInt();
System.out.println("Enter the number of columns. ");
v = console.nextInt();

dataType myArray = new dataType[n][v];

Use the clone method to get others. To get sum of elements in rows:

sum = 0;
int col = 0;
row = // row number;
// this finds the sum of elements in row n;

for (col = 0; col < myArray[row].length; col++)
sum = sum + myArray[col][row];

// sum of each individual row

for (row = 0; row < myArray.length; row++)
{
sum = 0;
for (col = 0; col < myArray[row].length; col++)
sum = sum + myArray[row][col];
// each final sum value is one element
// add the sum values of each row to get array.

// sum of each individual column

int col2, row2, sum2;
col2 = 0;
row2 = 0;
sum2 = 0;

for (col 2= 0; col2< myArray[0].length; col2++)
{
sum 2= 0;
for (row2 = 0; row2 < myArray.length; row2 ++)
sum2 = sum2 + myArray[row2][col2];
// each final sum value is an element;
// add the sum values for all columns to get array.


}





2. ArrayList class

You are to write a simple names book program. A names book contains names of your friends. Store your names book as an ArrayList with entries contains strings that represent the names. Your program must tell you how many friends you have and which one of them has the longest name.

Use compareTo() perhaps.

Could you use a fileReader or something to get them in? If so, throw a FileNotFoundException at the end of the declaration of main.


3. Inheritance

Design and draw the UML class diagram of a set of classes that define the employees of a Hospital, the classes are:
HospitalPerson , Doctor and Nurse.
Where HospitalPerson is a supper class, Doctor and Nurse are subclasses.

Design your classes to satisfy the following requirements:
1. Each HospitalPerson has a name and an idNumber.
2. A Doctor has in addition a specialty attribute, while a Nurse has a
maxDutyHours attribute.
3. We want to have a special print (output information) as following:
a. The name and idNumber of a HospitalPerson works for the Hospital.
b. The specialty of a Doctor.
c. The maxDutyHours of a Nurse.

Sounds more like composition.

Inheritance is an "is a" relationship.
Composition is a "has a" relationship.

Nurse and Doctor are inherited from HospitalPerson yes, as Doctor is a HospitalPerson and Nurse is a Hospital Person.

Public class Doctor Extends HospitalPerson
{

public Doctor()
{

}

}

Also, if you're overriding a method, use method name of superclass like this.
super.methodOfSuperClass(methodsParameters);

It seems you could either have abstract methods, methods defined like so:

public abstract String getName();
public abstract String getIDNumber();

in class HospitalPerson and define them in Doctor and Nurse.....
or you could use composition and use a "has a relationship" for name and IDNumber.

I can surely help with the very first question you have asked for. First you should have to see the approach. The task is to create a program that reads in 16 values from the keyboard and stores them into a two-dimensional array called myArray.

Then, the program should calculate the sum of elements for each row and each column and store these sums into separate arrays, rowSum, and colSum respectively. Here is the code snippet for you.

import java. util.Scanner;

public class ArraySum {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int[][] myArray = new int[4][4];
int[] rowSum = new int[4];
int[] colSum = new int[4];

// Input values
System.out.println("Enter 16 values:");
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
myArray[i][j] = scanner.nextInt();
rowSum[i] += myArray[i][j];
colSum[j] += myArray[i][j];
}
}

// Output arrays
System.out.println("Row sums:");
for (int i = 0; i < 4; i++) {
System.out.print(rowSum[i] + " ");
}
System.out.println("\nColumn sums:");
for (int i = 0; i < 4; i++) {
System.out.print(colSum[i] + " ");
}
}
}


Yes, there are many highly skilled and intelligent individuals in the field of Java programming. There exists a diverse community of professionals ranging from seasoned developers to academic experts who specialize in Java. You should also visit https://www.programminghomeworkhelp....va-assignment/ for smooth academic journey.

Sure, I can help you with those questions! Here are the solutions:

1. Arrays:
```java
import java.util.Scanner;

public class ArraySum {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int[][] myArray = new int[4][4];
int[] rowSum = new int[4];
int[] colSum = new int[4];

System.out.println("Enter 16 values:");

// Reading values into the array
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
myArray[i][j] = scanner.nextInt();
rowSum[i] += myArray[i][j];
colSum[j] += myArray[i][j];
}
}

// Printing the arrays
System.out.println("Row Sums:");
for (int i = 0; i < 4; i++) {
System.out.print(rowSum[i] + " ");
}
System.out.println("\nColumn Sums:");
for (int i = 0; i < 4; i++) {
System.out.print(colSum[i] + " ");
}
}
}
```

2. ArrayList class:
```java
import java.util.ArrayList;
import java.util.Scanner;

public class NamesBook {
public static void main(String[] args) {
ArrayList<String> namesBook = new ArrayList<>();
Scanner scanner = new Scanner(System.in);

System.out.println("Enter names (type 'done' to finish):");

// Reading names into the ArrayList
String name = scanner.nextLine();
while (!name.equalsIgnoreCase("done")) {
namesBook.add(name);
name = scanner.nextLine();
}

// Finding the longest name
String longestName = "";
for (String friend : namesBook) {
if (friend.length() > longestName.length()) {
longestName = friend;
}
}

// Printing number of friends and longest name
System.out.println("Number of friends: " + namesBook.size());
System.out.println("Longest name: " + longestName);
}
}
```

3. Inheritance:
```java
public class HospitalPerson {
private String name;
private String idNumber;

public HospitalPerson(String name, String idNumber) {
this.name = name;
this.idNumber = idNumber;
}

public void printInfo() {
System.out.println("Name: " + name);
System.out.println("ID Number: " + idNumber);
}
}

public class Doctor extends HospitalPerson {
private String specialty;

public Doctor(String name, String idNumber, String specialty) {
super(name, idNumber);
this.specialty = specialty;
}

@Override
public void printInfo() {
super.printInfo();
System.out.println("Specialty: " + specialty);
}
}

public class Nurse extends HospitalPerson {
private int maxDutyHours;

public Nurse(String name, String idNumber, int maxDutyHours) {
super(name, idNumber);
this.maxDutyHours = maxDutyHours;
}

@Override
public void printInfo() {
super.printInfo();
System.out.println("Max Duty Hours: " + maxDutyHours);
}
}
```

I hope these solutions help you understand the concepts better! If you have any questions or need further clarification, feel free to ask. Additionally, if you ever need help with programming assignment, there are resources available online like programminghomeworkhelp.com, where you can seek help with programming assignment.