61. Which of these methods are used to read in from file?
62. Which of these values is returned by read() method is end of file (EOF) is encountered?
63. Which of these exception is thrown by close() and read() methods?
64. Which of these methods is used to write() into a file?
65. What will be the output of the following Java program?
import java.io.*;
class filesinputoutput
{
public static void main(String args[])
{
InputStream obj = new FileInputStream("inputoutput.java");
System.out.print(obj.available());
}
}
Note: inputoutput.java is stored in the disk.
import java.io.*;
class filesinputoutput
{
public static void main(String args[])
{
InputStream obj = new FileInputStream("inputoutput.java");
System.out.print(obj.available());
}
}Note: inputoutput.java is stored in the disk.
66. What will be the output of the following Java program?
import java.io.*;
public class filesinputoutput
{
public static void main(String[] args)
{
String obj = "abc";
byte b[] = obj.getBytes();
ByteArrayInputStream obj1 = new ByteArrayInputStream(b);
for (int i = 0; i < 2; ++ i)
{
int c;
while((c = obj1.read()) != -1)
{
if(i == 0)
{
System.out.print(Character.toUpperCase((char)c));
obj2.write(1);
}
}
System.out.print(obj2);
}
}
}
import java.io.*;
public class filesinputoutput
{
public static void main(String[] args)
{
String obj = "abc";
byte b[] = obj.getBytes();
ByteArrayInputStream obj1 = new ByteArrayInputStream(b);
for (int i = 0; i < 2; ++ i)
{
int c;
while((c = obj1.read()) != -1)
{
if(i == 0)
{
System.out.print(Character.toUpperCase((char)c));
obj2.write(1);
}
}
System.out.print(obj2);
}
}
}67. What will be the output of the following Java program?
import java.io.*;
class Chararrayinput
{
public static void main(String[] args)
{
String obj = "abcdef";
int length = obj.length();
char c[] = new char[length];
obj.getChars(0, length, c, 0);
CharArrayReader input1 = new CharArrayReader(c);
CharArrayReader input2 = new CharArrayReader(c, 0, 3);
int i;
try
{
while((i = input2.read()) != -1)
{
System.out.print((char)i);
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
import java.io.*;
class Chararrayinput
{
public static void main(String[] args)
{
String obj = "abcdef";
int length = obj.length();
char c[] = new char[length];
obj.getChars(0, length, c, 0);
CharArrayReader input1 = new CharArrayReader(c);
CharArrayReader input2 = new CharArrayReader(c, 0, 3);
int i;
try
{
while((i = input2.read()) != -1)
{
System.out.print((char)i);
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}68. What will be the output of the following Java program?
import java.io.*;
class Chararrayinput
{
public static void main(String[] args)
{
String obj = "abcdefgh";
int length = obj.length();
char c[] = new char[length];
obj.getChars(0, length, c, 0);
CharArrayReader input1 = new CharArrayReader(c);
CharArrayReader input2 = new CharArrayReader(c, 1, 4);
int i;
int j;
try
{
while((i = input1.read()) == (j = input2.read()))
{
System.out.print((char)i);
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
import java.io.*;
class Chararrayinput
{
public static void main(String[] args)
{
String obj = "abcdefgh";
int length = obj.length();
char c[] = new char[length];
obj.getChars(0, length, c, 0);
CharArrayReader input1 = new CharArrayReader(c);
CharArrayReader input2 = new CharArrayReader(c, 1, 4);
int i;
int j;
try
{
while((i = input1.read()) == (j = input2.read()))
{
System.out.print((char)i);
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}