![DisplayBook.java
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Scanner;
public class DisplayBook {
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
Scanner scan = new Scanner(System.in);
File file = new File("D:books.txt");
if(file.exists()){
System.out.println("File exists");
FileInputStream fis = new FileInputStream(file);
int content;
while ((content = fis.read()) != -1) {
System.out.print((char) content);
}
fis.close();
}
else{
System.out.println("File does not exist");
String titles = "";
FileOutputStream fop = new FileOutputStream(file);
while(true){
System.out.println("Enter Book Title (none to exit):");
String title = scan.nextLine();
if(title.equalsIgnoreCase("none")){
break;
}
else{
titles = titles + title +" ";
}](https://image.slidesharecdn.com/displaybook-230408100812-5dc3778a/85/DisplayBook-java-import-java-io-File-import-java-io-FileInput-pdf-1-320.jpg)
![}
byte[] contentInBytes = titles.getBytes();
fop.write(contentInBytes);
fop.flush();
fop.close();
}
}
}
Output:
File does not exist
Enter Book Title (none to exit):
Physics
Enter Book Title (none to exit):
Chemistry
Enter Book Title (none to exit):
Science
Enter Book Title (none to exit):
Maths
Enter Book Title (none to exit):
none
--------------------------------------
File exists
Physics
Chemistry
Science
Maths
Solution
DisplayBook.java
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;](https://image.slidesharecdn.com/displaybook-230408100812-5dc3778a/85/DisplayBook-java-import-java-io-File-import-java-io-FileInput-pdf-2-320.jpg)
![import java.util.Scanner;
public class DisplayBook {
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
Scanner scan = new Scanner(System.in);
File file = new File("D:books.txt");
if(file.exists()){
System.out.println("File exists");
FileInputStream fis = new FileInputStream(file);
int content;
while ((content = fis.read()) != -1) {
System.out.print((char) content);
}
fis.close();
}
else{
System.out.println("File does not exist");
String titles = "";
FileOutputStream fop = new FileOutputStream(file);
while(true){
System.out.println("Enter Book Title (none to exit):");
String title = scan.nextLine();
if(title.equalsIgnoreCase("none")){
break;
}
else{
titles = titles + title +" ";
}
}
byte[] contentInBytes = titles.getBytes();
fop.write(contentInBytes);
fop.flush();
fop.close();
}](https://image.slidesharecdn.com/displaybook-230408100812-5dc3778a/85/DisplayBook-java-import-java-io-File-import-java-io-FileInput-pdf-3-320.jpg)
DisplayBook.java import java.io.File; import java.io.FileInput.pdf
- 1. DisplayBook.java import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.Scanner; public class DisplayBook { public static void main(String[] args) throws IOException { // TODO Auto-generated method stub Scanner scan = new Scanner(System.in); File file = new File("D:books.txt"); if(file.exists()){ System.out.println("File exists"); FileInputStream fis = new FileInputStream(file); int content; while ((content = fis.read()) != -1) { System.out.print((char) content); } fis.close(); } else{ System.out.println("File does not exist"); String titles = ""; FileOutputStream fop = new FileOutputStream(file); while(true){ System.out.println("Enter Book Title (none to exit):"); String title = scan.nextLine(); if(title.equalsIgnoreCase("none")){ break; } else{ titles = titles + title +" "; }
- 2. } byte[] contentInBytes = titles.getBytes(); fop.write(contentInBytes); fop.flush(); fop.close(); } } } Output: File does not exist Enter Book Title (none to exit): Physics Enter Book Title (none to exit): Chemistry Enter Book Title (none to exit): Science Enter Book Title (none to exit): Maths Enter Book Title (none to exit): none -------------------------------------- File exists Physics Chemistry Science Maths Solution DisplayBook.java import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException;
- 3. import java.util.Scanner; public class DisplayBook { public static void main(String[] args) throws IOException { // TODO Auto-generated method stub Scanner scan = new Scanner(System.in); File file = new File("D:books.txt"); if(file.exists()){ System.out.println("File exists"); FileInputStream fis = new FileInputStream(file); int content; while ((content = fis.read()) != -1) { System.out.print((char) content); } fis.close(); } else{ System.out.println("File does not exist"); String titles = ""; FileOutputStream fop = new FileOutputStream(file); while(true){ System.out.println("Enter Book Title (none to exit):"); String title = scan.nextLine(); if(title.equalsIgnoreCase("none")){ break; } else{ titles = titles + title +" "; } } byte[] contentInBytes = titles.getBytes(); fop.write(contentInBytes); fop.flush(); fop.close(); }
- 4. } } Output: File does not exist Enter Book Title (none to exit): Physics Enter Book Title (none to exit): Chemistry Enter Book Title (none to exit): Science Enter Book Title (none to exit): Maths Enter Book Title (none to exit): none -------------------------------------- File exists Physics Chemistry Science Maths