More Methods of io.RandomAccessFile Class :
- write(int bytes) : java.io.RandomAccessFile.write(int bytes) writes specified byte to the file, starting from the current file pointer.
Syntax : public void write(int bytes) Parameters : bytes : bytes to be written Return : ----- Exception : IOException :in case an I/O error occurs.
- write(byte[] b) : java.io.RandomAccessFile.write(byte[] b) writes b.length bytes from the specific byte array to the file, starting from the current file pointer.
Syntax : public void write(byte[] b) Parameters : b : data to be written Return : ------- Exception : IOException :in case an I/O error occurs.
- write(byte[] b, int offset, int len) : java.io.RandomAccessFile.write(byte[] b, int offset, int len) writes bytes initialising from offset position upto b.length from the buffer.
Syntax : public int write(byte[] b, int offset, int len) Parameters : b : buffer to write offset : starting position to write len : max no of bytes to write Return : --------- Exception : IOException :in case an I/O error occurs.
- writeBoolean(boolean b) : java.io.RandomAccessFile.writeBoolean(boolean b)
writes a boolean to file as one-byte value. True is written is value is ‘1’ else falseSyntax : public final void writeBoolean(boolean b) Parameters : b : boolean value to be written Return : --------- Exception : IOException :in case an I/O error occurs.
- writeByte(int b) : java.io.RandomAccessFile.writeByte(int b)
writes a byte to file as one-byte value, starting from the current position. Syntax : public final void writeByte(int b) Parameters : b : byte to be written Return : --------- Exception : IOException :in case an I/O error occurs.
- writeShort(int b) : java.io.RandomAccessFile.writeShort(int b) writes a short to file as two-byte value, starting from the current position.
Syntax : public final void writeShort(int b) Parameters : b : short to be written Return : --------- Exception : IOException :in case an I/O error occurs.
- writeChar(int c) : java.io.RandomAccessFile.writeChar(int c) writes a char to file as two-byte value, starting from the current position.
Syntax : public final void writeChar(int c) Parameters : c : char to be written Return : --------- Exception : IOException :in case an I/O error occurs.
- writeInt(int i) : java.io.RandomAccessFile.writeInt(int i) writes a int to file as four-byte value, starting from the current position.
Syntax : public final void writeInt(int i) Parameters : i : int value to be written Return : --------- Exception : IOException :in case an I/O error occurs.
- writeLong(long l) : java.io.RandomAccessFile.writeLong(long l) writes a int to file as eight-byte value, starting from the current position.
Syntax : public final void writeLong(long l) Parameters : l : long value to be written Return : --------- Exception : IOException :in case an I/O error occurs.
- writeFloat(float f) : java.io.RandomAccessFile.writeFloat(float f) converts the float argument to int and then writes a int to file as four-byte value, starting from the current position.
Syntax : public final void writeFloat(float f) Parameters : f : float value to be written Return : --------- Exception : IOException :in case an I/O error occurs.
- writeDouble(double d) : java.io.RandomAccessFile.writeDouble(double d)
converts the double argument to long and then writes a int to file as 8-byte value, starting from the current position.Syntax : public final void writeDouble(double d) Parameters : d : double value to be written Return : --------- Exception : IOException :in case an I/O error occurs.
- writeBytes(String s) : java.io.RandomAccessFile.writeBytes(String s) writes string to file as a sequence of bytes.
Syntax : public final void writeBytes(String s) Parameters : s : byte string to be written Return : --------- Exception : IOException :in case an I/O error occurs.
- writeUTF(String str) : java.io.RandomAccessFile.writeUTF(String str) writes a string to file using modified UTF-8 encoding(machine-independent)
Syntax : public final void writeUTF(String str) Parameters : str : String to be written Return : --------- Exception : IOException :in case an I/O error occurs.
// Java Program illustrating use of io.RandomAccessFile class methods// writeUTF(), writeChar(), writeDouble(), writeFloat(), write(byte[] b), // write(int i), writeBoolean(), writeLong(), writeShort()// write(byte[] b, int offset, int len) import java.io.*;public class NewClass{ public static void main(String[] args) { try { long l = 458754545576l; double d = 1.5; float f = 14.56f; int i = 1; boolean bol = true; short s = 15; // Creating a new RandomAccessFile - "GEEK" RandomAccessFile geek = new RandomAccessFile("GEEK.txt", "rw"); // writeUTF() : geek.writeUTF("Hello Geeks For Geeks"); geek.seek(0); System.out.println("writeUTF : " + geek.readUTF()); geek.seek(0); byte[] b = {1, 2, 3, 6, 5, 4}; // write(byte[] b) : geek.write(b); geek.seek(0); System.out.println("Use of .read(byte[] b) : " + geek.read(b)); // write(int i) : geek.write(i); geek.seek(0); System.out.println("write(int i) : " + geek.read(b)); // writeBoolean() : geek.writeBoolean(bol); geek.seek(0); System.out.println("writeBoolean() : " + geek.readBoolean()); geek.write(b, 2, 2); geek.seek(0); System.out.println("write(byte[] b, int offset, int len) : " + geek.readByte()); // writeChar() : geek.writeChar('c'); geek.seek(0); System.out.println("writeChar() : " + geek.readChar()); geek.seek(0); // writeDouble() : geek.writeDouble(d); geek.seek(0); System.out.println("writeDouble() : " + geek.readDouble()); geek.seek(0); //writeFloat() : geek.writeFloat(f); geek.seek(0); System.out.println("writeFloat() : " + geek.readFloat()); // writeLong() : geek.writeLong(l); geek.seek(0); System.out.println("writeLong() : " + geek.readLong()); // writeShort() : geek.writeShort(s); geek.seek(0); System.out.println("writeShort() : " + geek.readShort()); } catch (IOException ex) { System.out.println("Something went Wrong"); ex.printStackTrace(); } }} |
Output :
writeUTF : Hello Geeks For Geeks Use of .read(byte[] b) : 6 write(int i) : 6 writeBoolean() : true write(byte[] b, int offset, int len) : 1 writeChar() : c writeDouble() : 1.5 writeFloat() : 14.56 writeLong() : 4713287227910652010 writeShort() : 16744
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