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/* Write long to a file using DataOutputStream This Java example shows how to write a Java long primitive value to a file using writeLong method of Java DataOutputStream class. */ import java.io.DataOutputStream; import java.io.FileOutputStream; import java.io.IOException; public class WriteLongToFile { public static void main(String[] args) { String strFilePath = "C://FileIO//WriteLong.txt"; try { //create FileOutputStream object FileOutputStream fos = new FileOutputStream(strFilePath); /* * To create DataOutputStream object from FileOutputStream use, * DataOutputStream(OutputStream os) constructor. * */ DataOutputStream dos = new DataOutputStream(fos); long l = 65; /* * To write a long value to a file, use * void writeLong(long l) method of Java DataOutputStream class. * * This method writes specified long to output stream as 8 bytes value. */ dos.writeLong(l); /* * To close DataOutputStream use, * void close() method. * */ dos.close(); } catch (IOException e) { System.out.println("IOException : " + e); } } } |
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