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Zielflug
2 months ago
8

Assume that the reference variable r refers to a serializable object. Write code that serializes the object to the file ObjectDa

ta.dat.
Computers and Technology
1 answer:
oksian1 [950]2 months ago
5 0
To serialize an object, the following code can be used: FileOutputStream out = new FileOutputStream("ObjectData.dat"); ObjectOutputStream ostream = new ObjectOutputStream(out); ostream.writeObject(r); Explanation: For serializing an object, the writeObject method from the java.io.ObjectOutputStream class is utilized. The complete code snippet is as follows: import java.io.*; class Demo{ public static void main(String args[]){ try{ r = <reference to="" object="" be="" serialized="">; FileOutputStream out = new FileOutputStream("ObjectData.dat"); ObjectOutputStream ostream = new ObjectOutputStream(out); ostream.writeObject(r); ostream.close(); } catch(Exception e){ e.printStackTrace(); }} }. </reference>
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zubka84 [1067]
Many individuals perceive Excel primarily as a spreadsheet tool.
7 0
1 month ago
Given: an int variable k, an int array current Members that has been declared and initialized, an int variable memberID that has
Natasha_Volkova [1026]

Answer:

The following C++ program is displayed below. No output is produced as per the requirements stated in the question.

#include <iostream>

using namespace std;

int main() {    

   // declaration and initialization of integer variables

   int k, memberID = 12, nMembers=5;

   bool isAMember;    

   // declaration and initialization of integer array

   int currentMembers[] = {12, 34, 56, 78, 90};    

   for(k=0; k<nMembers; k++)

   {

       if(memberID == currentMembers[k])

       {

           // if the member is found in the array, the loop exits using the break statement

           isAMember = true;

           break;

       }

       else

           isAMember = false;

   }    

   return 0;

}

Explanation:

The program starts with the declaration and initialization of integer variables, followed by the definition of an array that holds the identifiers of all members.

The Boolean variable is declared, although it isn't initialized at this point.

int k, memberID = 12, nMembers=5;

bool isAMember;

int currentMembers[] = {12, 34, 56, 78, 90};

Subsequently, the array containing the members' IDs is searched for the specific member ID. This action is performed using a for loop along with an if-else condition within that loop.

If the member ID exists in the array, the variable isAMember is set to true; otherwise, it is marked as false.

If isAMember is set to true, the break statement allows for the loop to be exited early.

for(k=0; k<nMembers; k++)

   {

       if(memberID == currentMembers[k])

       {

           isAMember = true;

           break;

       }

       else

           isAMember = false;

 }

The break statement is utilized since any other IDs in the array won't match the given member ID and thus, the variable isAMember would incorrectly be initialized to false even if the member ID is present in the array. Therefore, it's crucial to terminate the loop as soon as the matching member ID is located.

This program can be tested by utilizing different member ID values and varying the size of the array.

4 0
1 month ago
A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted data signals. The n
zubka84 [1067]

Answer:

EMI and RFI

Explanation:

EMI, or Electromagnetic Interference, can also be referred to as Radio-frequency Interference (RFI) within the radio frequency domain.

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FOREACH, EXPLODE and MAIL are examples of crazy functions.
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The selected response is B
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Determine the number of bytes necessary to store an uncompressed binary image of size 4000 × 3000 pixels
maria [1035]

Response: 1,500,000 bytes.

Clarification:

If we assume the image dimensions are 4000 pixels in width and 3000 pixels in height, the total uncompressed image will consist of 4000*3000= 12,000,000 pixels.

In the case of a binary image, each pixel can have only two values, which necessitates one bit for each pixel.

This indicates that we need to accommodate 12,000,000 bits.

Given that 1 byte equals 8 bits.

So, to store an uncompressed binary image sized 4000 x 3000 pixels, 12,000,000/8 bytes is required ⇒ 1,500,000 bytes.

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2 months ago
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