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PilotLPTM [1.2K]
3 years ago
10

What can you say about the following Java class definition?

Computers and Technology
1 answer:
IrinaK [193]3 years ago
3 0

Answer:

The class is called MyApp which inherits from JFrame and implements the ActionListener interface.

Explanation:

The class is called MyApp which extends the swing class JFrame and implements the ActionListener interface for event handling. As a results it needs to implement a method called actionPerformed for handling the relevant events that may be raised from the user interface. Since it extends JFrame, it has access to all the public and protected methods defined in JFrame(for example setTitle to set the title of the frame).

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Create an application (that uses the SortedABList) that allows a user to enter a list of countries that he or she has visited an
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Answer:

import java.util.*;

public class Country

{

  public static void main(String args[])

  {

      char ch,temp;

      int flag = 0;

      String country;

      ArrayList<String> countries = new ArrayList<String>();

      Scanner sc = new Scanner(System.in);

      do

      {

          System.out.println("enter the country you have visited:\t");

          country = sc.next();

          for(int i=0;i<countries.size();i++)

          {

              if(countries.get(i).equals(country))

              {

                  System.out.println("you have already entered the country");

                  flag = 1;

                  break;      

              }

          }

          if(flag == 0)

          {

              countries.add(country);

              flag = 0;

          }

          System.out.println("want to add another country(y/n):\t");

          ch = sc.next().charAt(0);

      }while(ch!='n');

      Collections.sort(countries);

      System.out.println("Countries you have visited:\t"+countries);

      System.out.println("Total number of contries visited:"+countries.size());

     

  }

}

Explanation:

8 0
4 years ago
List out the input and output device .​
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Computer - Input Devices

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Sound Card.

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3 years ago
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A structure is private by default, but can be declared to be friend or private.
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Structures can be accessed from anywhere within the module or class in which they are declared. A structure is Friend by default. To specify the accessibility in more detail, include Public, Protected, Friend, Protected Friend, or Private in the Structure statement. You must declare every data member of a structure.
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Jeff wants to be an archeologist. He found the information below and wants to properly cite it for his own use. The information
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