DataInputStream readBoolean() method in Java with Examples Last Updated : 05 Jun, 2020 Summarize Comments Improve Suggest changes Share Like Article Like Report The readBoolean() method of DataInputStream class in Java is used to read one input byte and if the byte read is zero this method returns false and if the byte read is nonzero then this method returns true. Syntax: public final boolean readBoolean() throws IOException Specified By: This method is specified by readBoolean() method of DataInput interface. Parameters: This method does not accept any parameter. Return value: This method returns the boolean value read i.e true or false. Exceptions: EOFException - It throws EOFException if the input stream is ended. IOException - This method throws IOException if the stream is closed or some other I/O error occurs. Below programs illustrate readBoolean() method in DataInputStream class in IO package: Program 1: Java // Java program to illustrate // DataInputStream readBoolean() method import java.io.*; public class GFG { public static void main(String[] args) throws IOException { // Create byte array byte[] b = { 10, 0, 0, 20, 0 }; // Create byte array input stream ByteArrayInputStream byteArrayInputStr = new ByteArrayInputStream(b); // Convert byte array input stream to // DataInputStream DataInputStream dataInputStr = new DataInputStream( byteArrayInputStr); while (dataInputStr.available() > 0) { // Print boolean value System.out.println( dataInputStr.readBoolean()); } } } Output: true false false true false Program 2: Java // Java program to illustrate // DataInputStream readBoolean() method import java.io.*; public class GFG { public static void main(String[] args) throws IOException { // Create byte array byte[] b = { 10, 5, 7, 1, 0 }; // Create byte array input stream ByteArrayInputStream byteArrayInputStr = new ByteArrayInputStream(b); // Convert byte array input stream to // DataInputStream DataInputStream dataInputStr = new DataInputStream( byteArrayInputStr); while (dataInputStr.available() > 0) { // Print boolean value System.out.println( dataInputStr.readBoolean()); } } } Output: true true true true false References: https://docs.oracle.com/javase/10/docs/api/java/io/DataInputStream.html#readBoolean() Comment More infoAdvertise with us Next Article DataInputStream readLong() method in Java with Examples P pp_pankaj Follow Improve Article Tags : Java Java-Functions Java-IO package Practice Tags : Java Similar Reads DataInputStream readByte() method in Java with Examples The readByte() method of DataInputStream class in Java is used to read and return one input byte. The byte is a signed value in the range from -128 to +127. The bytes in this method are read from the accommodated input stream. Syntax: public final byte readByte() throws IOException Specified By: Thi 2 min read DataInputStream readDouble() method in Java with Examples The readDouble() method of DataInputStream class in Java is used to read eight input bytes and returns a double value. This method reads the next eight bytes from the input stream and interprets it into double type and returns. Syntax: public final double readDouble() throws IOException Specified By 2 min read DataInputStream readLong() method in Java with Examples The readLong() method of DataInputStream class in Java is used to read eight input bytes and returns a long value. This method reads the next eight bytes from the input stream and interprets it into long type and returns. Syntax: public final long readLong() throws IOException Specified By: This met 2 min read DataInputStream read() method in Java with Examples The read() method of DataInputStream class in Java is of two types: read(byte[] b) method of DataInputStream class in Java is used to read bytes from the input stream and store them into the buffer byte array.This read() method returns the number of bytes actually read as an integer type. This metho 4 min read DataInputStream readInt() method in Java with Examples 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: public final int readInt() throws IOException Specified By: This me 2 min read DataInputStream readFloat() method in Java with Examples The readFloat() method of DataInputStream class in Java is used to read four input bytes and returns a float value. This method reads the next four bytes from the input stream and interprets it into float type and returns. Syntax: public final float readFloat() throws IOException Specified By: This 2 min read Like