Best answer: What is readInt in Java?

What does IO readInt () do?

DataInputStream. readInt() method reads four input bytes and returns one integer value.

What is data input stream in Java?

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.

What is the use of DataInputStream and DataOutputStream 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.

What are the methods defined in DataInputStream explain their purpose?

Java DataInputStream class Methods

Method Description
int readInt() It is used to read input bytes and return an int value.
byte readByte() It is used to read and return the one input byte.
char readChar() It is used to read two input bytes and returns a char value.

What does readInt mean?

The readInt() method of DataInputStream class in Java is used to read four input bytes and returns a integer value. This method reads the next four bytes from the input stream and interprets it into integer type and returns. Syntax: Attention reader!

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Is there a readChar in Java?

The readChar() method of DataInputStream class in Java is used to read two input bytes and returns a char value. This method basically reads the bytes as character that are written by writechar() method of DataOutputStream class.

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.

What is BufferedInputStream in Java?

Java BufferedInputStream class is used to read information from stream. It internally uses buffer mechanism to make the performance fast. … When the bytes from the stream are skipped or read, the internal buffer automatically refilled from the contained input stream, many bytes at a time.

What is Bufferreader class in Java?

public class BufferedReader extends Reader. Reads text from a character-input stream, buffering characters so as to provide for the efficient reading of characters, arrays, and lines. The buffer size may be specified, or the default size may be used. The default is large enough for most purposes.

Why do we 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.

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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.

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