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2 years ago

The short-range two-way communication technology behind contactless payments is called ____.

Computers and Technology

1 answer:

marshall27 [118]2 years ago

8 0

Answer:

Near-field communication (NFC)

Explanation:

It's a short-range wireless connectivity technology that lets NFC-enabled devices communicate with each other. NFC began in the payment-card industry and is evolving to include applications in numerous industries worldwide.

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What is the advantage of using CSS?

Naily [24]

Answer:

c) It creates a better-structured document

Explanation:

The layout of a web page is better controlled. Style (CSS) kept separate from structure (HTML), means smaller file size. Reduced file size means reduced bandwidth, which means faster loading time.

3 0

4 years ago

Read 2 more answers

Create a GUI application that allows the user to select a rate category (from a set of radio buttons), and enter the number of m

aniked [119]

Answer:

Kindly note that, you're to replace "at" with shift 2 as the brainly text editor can't take the symbol

Explanation:

Below is the Java Swing implementation of the assignment.

=========================== LongDistance.java ====================================

import java.awt.GridLayout;

import javax.swing.*;

public class LongDistance extends JFrame{

/**

public static float rate;

public static float minutes;

public static float total;

LongDistance(){

RatePanel rp = new RatePanel();

MinutesPanel mp = new MinutesPanel();

ButtonsPanel bp = new ButtonsPanel();

this.setLayout(new GridLayout(3, 1));

this.add(rp);

this.add(mp);

this.add(bp);

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

this.setSize(250, 250);

this.setVisible(true);

}

============================ RatePanel.java ==================================

import java.awt.Dimension;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.BorderFactory;

import javax.swing.ButtonGroup;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.border.Border;

public class RatePanel extends JPanel implements ActionListener {

/**

private JRadioButton jr1, jr2, jr3;

RatePanel(){

Border panelBorder = BorderFactory.createTitledBorder("Select a Rate Category");

jr1 = new JRadioButton("Daytime ($0.7) per minute");

jr2 = new JRadioButton("Evening ($0.12) per minute");

jr3 = new JRadioButton("Off-Peak ($0.05) per minute");

ButtonGroup bg = new ButtonGroup();

this.setLayout(new GridLayout(3,1));

this.setBorder(panelBorder);

this.setPreferredSize(new Dimension(800, 150));

this.add(jr1);

this.add(jr2);

this.add(jr3);

bg.add(jr1);

bg.add(jr2);

bg.add(jr3);

jr1.addActionListener(this);

jr2.addActionListener(this);

jr3.addActionListener(this);

}

"at"Override

public void actionPerformed(ActionEvent arg0) {

// TODO Auto-generated method stub

if(arg0.getSource() == jr1){

LongDistance.rate = 0.07f;

}

if(arg0.getSource() == jr2){

LongDistance.rate = 0.12f;

}

if(arg0.getSource() == jr3){

LongDistance.rate = 0.05f;

}

=============================== MinutesPanel.java =============================

import java.awt.Dimension;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import javax.swing.*;

import javax.swing.border.Border;

import javax.swing.event.DocumentListener;

public class MinutesPanel extends JPanel implements KeyListener{

JTextField jt;

MinutesPanel(){

Border panelBorder = BorderFactory.createTitledBorder("Time Of Call");

this.setLayout(new GridLayout(1, 2));

JLabel jl = new JLabel("Minutes: ");

jt = new JTextField();

jt.setBounds(50,50,150,20);

this.setPreferredSize(new Dimension(10, 10));

this.setBorder(panelBorder);

this.add(jl);

this.add(jt);

jt.addKeyListener(this);

}

"at"Override

public void keyPressed(KeyEvent arg0) {

// TODO Auto-generated method stub

}

"at"Override

public void keyReleased(KeyEvent arg0) {

// TODO Auto-generated method stub

if(jt.getText() != "")

LongDistance.minutes = Float.parseFloat(jt.getText());

}

"at"Override

public void keyTyped(KeyEvent arg0) {

// TODO Auto-generated method stub

}

============================= ButtonsPanel.java ============================

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

public class ButtonsPanel extends JPanel implements ActionListener{

JButton calculate;

JButton exit;

ButtonsPanel(){

calculate = new JButton("Calculate Charges");

exit = new JButton("Exit");

this.add(calculate);

this.add(exit);

calculate.addActionListener(this);

exit.addActionListener(this);

}

"at"Override

public void actionPerformed(ActionEvent arg0) {

// TODO Auto-generated method stub

if(arg0.getSource() == calculate){

System.out.println("r " + LongDistance.rate);

System.out.println("m " + LongDistance.minutes);

LongDistance.total = LongDistance.rate * LongDistance.minutes;

JOptionPane.showMessageDialog(null, "Total Charges: " +LongDistance.total);

}

if(arg0.getSource() == exit){

System.exit(0);

}

============================ App.java==============================

public class App {

public static void main(String[] args) {

LongDistance ld = new LongDistance();

}

Check the output below

6 0

4 years ago

Which of the following functions needed to implement the information security program evaluates patches used to close software v

solong [7]

Answer:

a. Systems testing

Explanation:

According to my research on information technology, I can say that based on the information provided within the question the term being defined is called System Testing. Like mentioned in the question, this is a technique used in order to evaluate the complete system the system's compliance against specified requirements, which tests its functionalities from an end-to-end perspective in order to evaluates patches used to close software vulnerabilities and make sure it complies with all policies.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

6 0

3 years ago

Write a recursive function to determine if a number is prime.

Darya [45]

Answer:

Follows are the code to find the prime number:

import java.util.*;//import package for user input

public class Main//defining a class

{

public static boolean Prime(int x, int j)//defining a method isPrime

{

if (x<= 2) //use if block to check x less than equal to 2

return (x== 2) ? true : false; //use bitwise operator to return value

if (x%j == 0) //use if to check x%j equal to 0

return false;//return false value

if (j*j > x)//defining if that check i square value greater than n

return true; //return true value

return Prime(x, j+1); //callling recursive method

}

public static void main(String[] as)//main method

{

int n; //defining integer variable

Scanner oxc=new Scanner(System.in);//creating Scanner class object

n=oxc.nextInt();//input value

if (Prime(n, 2)) //use if block to call isPrime method

System.out.println("Yes"); //print value

else //else block

System.out.println("No"); //print value

}

Output:

Yes

Explanation:

In this code, a static boolean method "Prime" is declared, that accepts two integer variables in its parameter and defines the if block that checks the prime number condition by the recursive method and returns a value true or false. Inside, the main method an integer variable is declared that uses the Scanner class object for input value and passes into the method and prints its value.

6 0

3 years ago

To locate all locations in a document with the word "employer" and replace it with "company," you should use the _____ function.

grandymaker [24]

That should be the replace function which performs word replacements in documents.

6 0

4 years ago