If you want to append data to the existing binary file,BinaryFile.dat,use the following statements to open the file.
A) FileOutputStream fstream =
New FileOutputStream("BinaryFile.dat");
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream);
B) FileOutputStream fstream =
New FileOutputStream("BinaryFile.dat",false);
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream);
C) FileOutputStream fstream =
New FileOutputStream("BinaryFile.dat",true);
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream);
D) FileOutputStream fstream =
New FileOutputStream("BinaryFile.dat");
DataOutputStream binaryOutputFile =
New DataOutputStream(fstream,true);

Question

Quizplus · Accepted Answer

Option C uses the constructor of FileOutputStream that takes two parameters: the name of the file and a Boolean value. The Boolean value specifies whether the data should be appended to the end of the file or not. By passing 'true', the data will be added to the end of the file, hence allowing us to append to it. Therefore, option C is the best choice.

If You Want to Append Data to the Existing Binary