What is the use of DataInputStream and DataOutputStream in Java?

What is the use of DataInputStream in Java?

Class DataInputStream. A data input stream lets an application read primitive Java data types from an underlying input stream in a machine-independent way. An application uses a data output stream to write data that can later be read by a data input stream.

Why do we use DataInputStream and DataOutputStream?

DataOutputStream and java. io. DataInputStream give us the power to write and read primitive data type to a media such as file. … Using this class make it easier to read int , float , double data and others without needing to interpret if the data should be an int or a float data.

What is the purpose of a DataOutputStream?

A data output stream lets an application write primitive Java data types to an output stream in a portable way. An application can then use a data input stream to read the data back in.

What is use of DataInputStream class in socket programming?

//DataInputStream class is to create an input stream to receive response from the server. DataInputStream din=new DataInputStream. //DataOutputStream class is to create output stream to send information to the server socket.

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What is the purpose of scanner in Java?

The Java Scanner class is used to collect user input. Scanner is part of the java. util package, so it can be imported without downloading any external libraries. Scanner reads text from standard input and returns it to a program.

What is Randomaccessfile in Java?

This class is used for reading and writing to random access file. A random access file behaves like a large array of bytes. If end-of-file is reached before the desired number of byte has been read than EOFException is thrown. … It is a type of IOException.

When should I use DataOutputStream?

Java DataOutputStream class allows an application to write primitive Java data types to the output stream in a machine-independent way. Java application generally uses the data output stream to write data that can later be read by a data input stream.

What is the difference between DataOutputStream and OutputStream?

There is no significant performance difference between both. You should use OutputStream only if you transfer raw binary data. … DataOutputStream only ‘makes sure the data is formatted in a platform-independent way` if you use the extra APIs it provides.

What is ObjectInputStream and ObjectOutputStream in Java?

The ObjectOutputStream is used to write the Java objects, and the ObjectInputStream is used to read the objects again.

What is writeInt in Java?

writeInt(int v) method writes a int value to the to the underlying stream as four bytes. The counter written is incremented by 4 on successful invocation of this method.

What is the difference between DataInputStream and DataOutputStream class in Java?

The DataInputStream class read primitive Java data types from an underlying input stream in a machine-independent way. While the DataOutputStream class write primitive Java data types to an output stream in a portable way.

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What is flush method in Java?

The flush() method of PrintWriter Class in Java is used to flush the stream. By flushing the stream, it means to clear the stream of any element that may be or maybe not inside the stream.

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