So if I assigned values in arrays like the below:
This is the method in main class:
public static void trainer(){
trainer[] trainerArr = new trainer[4];
trainerArr[0] = new trainer("Ben Yap", "Male", "Kuala Lumpur", 10000, "Yoga");
trainerArr[1] = new trainer("Wilson Ting", "Male", "Kuala Lumpur", 10001, "Kick-boxing");
[Code] .....
How can i pass these arrays into another method in the main class?
I have a question about an error I am getting when trying to pass a two dimensional array to a method. I keep getting the "incompatible types, int cannot be converted to int[][]". I am getting the error in a few different place (see comments - at the first call of the method, at a recursive call, and at the return statement. I believe I am passing the same type of array in all cases to the type of array defined in the method parameters.
Below is my code.
// this is a call from the main method
int[][] c = new int[temp1.length][temp1.length];
c = MatrixMultiply(a,b); // this is first place the error occurs
} // end main
public static int MatrixMultiply(int[][] A, int[][] B) {
// throw new UnsupportedOperationException("Not supported yet.");
int a[][] = A;
[Code]....
***** start code ***
public class AddArray {
public static void main(String[] args) {
int sum = 0;
sum = addArray(myarray);
System.out.println(" hello");
System.out.println("This program will create an array then pass the array to an method to be totaled");
int myarray[] = new int [6];
[Code] ....
I need to pass user input from the main method, which is then validated using another method that is returned as a valid score, and then I pass the valid input to another method that stores the data in an array. The array is initialized within the method. I tried to use an if-else statement to initialize the array, because I originally did this at the beginning of the method. I soon learned that I was creating a new array everything I accessed the method. Needless to say, this isn't working either.
public static void main(String[] args) {
int judges = 7;
float[] validScores = new float[judges];
for (int i = 0; i < judges; i++) {
float score = -1;
[Code] ....
I want to take command line arguments and pass them to a paint method. This is a test program that will just draw some equations. How can I get the input array clinputs[] to be used in public void paint( Graphics g) ?
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class LinePlot extends JFrame {
public LinePlot() {
super( "Line Plot" );
setSize(800,600);
[Code] .....
createBufferReader(){
BufferedReader br = new BufferedReader(new FileReader(new File(...)));
br.readLine();
br.readLine();
secondMethod(br);
secondMethod(BufferedReader br){
br.readLine(); //
will the br continue from the first line of the file or the one he last read in the createBufferReader method?
I am looking to pass a long list of results in a String toString() method,this is my code
public void newlist(){
for(int i = 0 ; i <= nbComposant;i++){
System.out.print(ref+i+" (quantity "+quantity+i+")");
}
}
public String toString(){
return newlist();
}
Essentially, the code I want is:
public void randomCreate(ParentObject obj){
int x = random(0-4); //pseudo
int y = random(0-4); //pseudo
create new ParentObj(x,y);
}
ParentObject is actually abstract, so you would only ever pass one of its children objects to it, and a child object of that type would be created. It seems like there should be a way to pass a type, rather than an object, and then create an instance later down, but I don't know if that is actually possible, or if it is poor programming style.
How do I pass the data within an initialized array from inside one method to another method of the same class? Will I need to return the array, assigning it to a temp array, which will then be passed as an argument to the other array? The idea is to create an array for an entire year, and be able to manipulate or edit data for a particular month using the other method.
public class Temperature {
static Scanner input = new Scanner(System.in);
static String [] monthArray = {"January", "February", "March", "April", "May",
"June", "July", "August", "October", "November", "December"};
public static void main(String[] args) {
[Code] .....
I'm trying to pass an integer array,
int[] fibSequence;
From my Fibonacci servlet to a jsp page called "result" but when I pass the array in the redirect I get the following output:
[[I@63cf2179]
I figured out that this is because the array is being converted to string before it is passed over and then converted again on the jsp page.
How I can pass the array over and print the contents, ie an array of integers?
This is how I'm sending the array in the result page:
resp.sendRedirect(("result.jsp?fibSequence=" + fibSequence));
And this is how its being retrieved and printed on the result.jsp page:
<%String[] fibSequence = request.getParameterValues("fibSequence");%>
<input type="text" name="fibNum" value="<%=java.util.Arrays.deepToString(fibSequence)%>" size="40px" style="font-size:30pt;height:60px">
Is this possible in Java?
public void doSomething(int[4] year){
}
What I am trying to do is to get the person who is using the method to send a year in the format 1998 and so on.
What would be the best way to accomplish this?
I have an arraylist in my servlet which i need to pass to jsp as a response for a javascript call. This is an arraylist of DTOs. There are 24 DTO objects in the list. The DTO has an int variable and a HashMap. And i need to pass this into the javascript code in my jsp page. Do i use json? Do i send the entire list as a json object or should i iterate through the arraylist (from servlet) and serialize all the DTOs and pass that to the jsp?
View Replies View Relatedprompts user for the grades of each of the students and saves them an int array called grades. Your program shall check that the grade is between 0 and 100. program should then check if the grade is equal to or greater than 50, where 50 is the pass rate.
A sample output :
Enter the number of students: 3
Enter the grade for student 1: 55
Enter the grade for student 2: 108
Invalid grade, try again...
Enter the grade for student 2: 56
Enter the grade for student 3: 57
The average is 56.0
The maximum is 57
The minimum grade is 55
The number of fails is 0
The number of passes is 3
..
I am quiet stuck on this one.
in my progrm there are three diff array of objects...namely garments..gadgets and home app...now one who buys from each of these sections will have to make a bill at last...when he choses to make the bill he will be shown the list of products he bought and their details (like price...brand...etc)...so i thought that while he orders each product(which is done in a previous method called purchase()...)....(each product is stored as an object in there diif arrays namely garments...gadgets ...appliances)....each of those object will be copied in a new array in a diif class...then that array print will give me the desired result...
is this approach correct...?and if its correct then how can i pull out a specific obj frm a stored array of object and then save it in a new array....?
A method is declared to take three arguments. A program calls this method and passes only two arguments.Will it take the third argument as
1 null
2 void
3 zero
4 Compilation error
public class MyInteger {
private int value;
public MyInteger(int number){
value = number;
System.out.println("Constructor created with value of " + value);
[code]....
I can't seem to get the value for integer1 and integer2 to pass with the setValue method. I get a runtime error stating the I need to have an int value for these two integers.
I'd like to know how to return a new array, I wrote in a method below the main method. I want to print the array but system.out.print doesn't work for arrays apparently. What structure i should use?
View Replies View RelatedSo I need to generate 10 random integers in the range 1-20 but i have to store them in an array called numbers. Then I have to call a method called displayArray which displays the contents of the array and for the assignment i have to use a for loop to traverse the array. The method header for the displayArray method is:
public static void displayArray(int[] array)
This is what I have done
public class RandomIntegers {
static int numbers = 0;
public static void displayArray(int[] array) {
System.out.println(numbers + "Numbers Generated");
[Code] .....
Write a method that returns a new array by eliminating the duplicate values in the array using the following method header: public static int[] eliminateDuplicates(int[] list). The thing is that I found the working solution that is written below, but how it works. How to eliminateDuplicates method done with flag and flag2.
Here is the code:
Java Code:
import java.util.Scanner;
public class Exercise06_15 {
public static void main(String[] args) {
java.util.Scanner input = new java.util.Scanner(System.in);
int[] numbers = new int[10];
System.out.println("Enter ten numbers: ");
[code]....
I am passing input from the user to a method that will initialize an array of the data (scores in this case). The method is filling the entire array with the last input value.
array initializer method
Java Code:
public static float[] inputAllScores(float validScore) {
float[] diverScores = new float[7];
for (int i = 0; i < diverScores.length; i++) {
diverScores[i] = validScore;
}
return diverScores;
} mh_sh_highlight_all('java');
[Code] .....
I just tried to fill an array with some numbers, calculated by a other function.I just tried to print this array as array, but it doesnt work. Maybe its just about the main method.
public static void main(String[] args) {
ggT(5);
}
public static int ggT(int a, int b) {
while(a!=b){
if(a>b) {
a=a-b;
} else {
b=b-a;
}
}
return a;
[code]....
Can we pass more than one array in a method?
View Replies View Related I had to write a program that prompts the cashier to enter all prices and names, adds them to two arrays lists, calls the method that I implemented, and displays the result and use 0 as the sentinel value. I am having difficulty coming up with a for loop in the method, I believe I have the condition right but I am having trouble with the statements. I now know that String does not have the get property, but I have only done examples with integers and I am not very good with for loops and wouldn't know how to fix it.
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
ArrayList<Double> sales = new ArrayList<Double>();
ArrayList<String> names = new ArrayList<String>();
System.out.print("Enter Number of Customers");
double salesAmount;
System.out.print("Enter Sales for First Customers");
salesAmount = in.nextDouble();
while(salesAmount != 0)
[code]....
I'm writing a code with a cellphone class to set price, brand and serial number. I'm also, in the main method, initializing 100 different cellphone in a matrix style ( up to here I'm fine). I have to use a copy constructor to define some cellphones ( fine too). Another thing I had to do was to generate random numbers and swap the price of the cellphones ( which I'm fine with too). My problem lies after using my static method. I have to display a new matrix with the changed price and return the counter that I used in my method to see how many times it was changed.
My two problems are that if I display my array again after I ran the method, it stays the same ( I didn't "catch" the change so I'm guessing the compiler just didn't keep them in the array). Secondly, I don't know how to return the counter. I don't have any ".getCounter" or something ( what I'm used to). Any input?
My formatting is terrible, I'm trying to improve it no need to point it out
Here's my code:
import java.util.Random;
//Cellphone Class ( apart from main method)
class Cellphone {
private String brand;
private long serialNumber;
private double Price;
//declaration of variables in cellphone class
[Code] ......
I'm writing a code with a cellphone class to set price, brand and serial number. I'm also, in the main method, initializing 100 different cellphone in a matrix style ( up to here I'm fine). I have to use a copy constructor to define some cellphones ( fine too). Another thing I had to do was to generate random numbers and swap the price of the cellphones ( which I'm fine with too). My problem lies in my static method. I coded it all, but I can't seem to invoke it on the cellphone.
Basically, the method has to search for cellphones in the array with the same price, swap the price, print it out, and keep a counter of the price swap it has made. But I can't seem to invoke it on eclipse. It keeps telling me it is undefined for the class cellphone ( the method modifyCellPhone)
Here's the code:
import java.util.Random;
class Cellphone {
private String brand;
private long serialNumber;
private double Price;
public Cellphone (String br, long sN, double Pr) {
[Code] .....
I've found different examples on line, but none that use the split method with a multidimensional array. I would like a user to input coordinates (x,y) for city locations and store them into a 2-D array. For the user to input the x,y-coordinates on one line I need to use split(',') and then parse the string array to a double which will then be used to calculate the distances from one another.
My issue is how to store the String vales into the 2-D array. I do not want to store the x-value at even (cityArray[0]) and y-value at odd (cityArray[1]) 1-D locations.