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3 years ago

What is a nonimpact printer that creates characters and images with dots by using a drum and toner called?

1 answer:

5 0

The answer is Laser Printer. It is a non impact printer that creates characters and images with dots by using a drum and toner. The main advantages of laser printers are speed, precision and economy. A laser can move very quickly, and because the laser beam has an unvarying diameter, it can draw more precisely, without spilling any excess ink.

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What is meant by editing a document

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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

Hackers often argue that hacking is for the good of all people because it points out flaws in computer systems. do you agree wit

lutik1710 [3]

"Hackers" who work for companies to expose security flaws are definitely good, they're helping protect systems, often referred to as "white-hat" hackers. Many companies hire people like these or offer bounties for such people who can find vulnerabilities. One could say that even without permission, people who hack with the intent of demonstrating holes in security or improving a service could be considered good.

However, I don't believe that as firstly, they are breaking the law, and secondly, they are stealing data and invading people's privacy. One might as well break into somebody's house to say their security is bad!

7 0

3 years ago