41. What is serialization?
42. What will be the output of the following Java code?
import java.io.*;
class streams
{
public static void main(String[] args)
{
try
{
FileOutputStream fos = new FileOutputStream("serial");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeInt(5);
oos.flush();
oos.close();
}
catch(Exception e)
{
System.out.println("Serialization" + e);
System.exit(0);
}
try
{
int z;
FileInputStream fis = new FileInputStream("serial");
ObjectInputStream ois = new ObjectInputStream(fis);
z = ois.readInt();
ois.close();
System.out.println(x);
}
catch (Exception e)
{
System.out.print("deserialization");
System.exit(0);
}
}
}
import java.io.*;
class streams
{
public static void main(String[] args)
{
try
{
FileOutputStream fos = new FileOutputStream("serial");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeInt(5);
oos.flush();
oos.close();
}
catch(Exception e)
{
System.out.println("Serialization" + e);
System.exit(0);
}
try
{
int z;
FileInputStream fis = new FileInputStream("serial");
ObjectInputStream ois = new ObjectInputStream(fis);
z = ois.readInt();
ois.close();
System.out.println(x);
}
catch (Exception e)
{
System.out.print("deserialization");
System.exit(0);
}
}
}
43. How many ports of TCP/IP are reserved for specific protocols?
44. What will be the output of the following Java program?
import java.io.*;
class serialization
{
public static void main(String[] args)
{
try
{
Myclass object1 = new Myclass("Hello", -7, 2.1e10);
FileOutputStream fos = new FileOutputStream("serial");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(object1);
oos.flush();
oos.close();
}
catch(Exception e)
{
System.out.println("Serialization" + e);
System.exit(0);
}
try
{
int x;
FileInputStream fis = new FileInputStream("serial");
ObjectInputStream ois = new ObjectInputStream(fis);
x = ois.readInt();
ois.close();
System.out.println(x);
}
catch (Exception e)
{
System.out.print("deserialization");
System.exit(0);
}
}
}
class Myclass implements Serializable
{
String s;
int i;
double d;
Myclass(String s, int i, double d)
{
this.d = d;
this.i = i;
this.s = s;
}
}
import java.io.*;
class serialization
{
public static void main(String[] args)
{
try
{
Myclass object1 = new Myclass("Hello", -7, 2.1e10);
FileOutputStream fos = new FileOutputStream("serial");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(object1);
oos.flush();
oos.close();
}
catch(Exception e)
{
System.out.println("Serialization" + e);
System.exit(0);
}
try
{
int x;
FileInputStream fis = new FileInputStream("serial");
ObjectInputStream ois = new ObjectInputStream(fis);
x = ois.readInt();
ois.close();
System.out.println(x);
}
catch (Exception e)
{
System.out.print("deserialization");
System.exit(0);
}
}
}
class Myclass implements Serializable
{
String s;
int i;
double d;
Myclass(String s, int i, double d)
{
this.d = d;
this.i = i;
this.s = s;
}
}
45. Which of these methods is used to know host of an URL?
46. Which of these interface extends DataOutput interface?
47. Which of these is a standard for communicating multimedia content over email?
48. What will be the output of the following Java code?
import java.io.*;
class serialization
{
public static void main(String[] args)
{
try
{
Myclass object1 = new Myclass("Hello", -7, 2.1e10);
FileOutputStream fos = new FileOutputStream("serial");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(object1);
oos.flush();
oos.close();
}
catch(Exception e)
{
System.out.println("Serialization" + e);
System.exit(0);
}
try
{
int x;
FileInputStream fis = new FileInputStream("serial");
ObjectInputStream ois = new ObjectInputStream(fis);
x = ois.readInt();
ois.close();
System.out.println(x);
}
catch (Exception e)
{
System.out.print("deserialization");
System.exit(0);
}
}
}
class Myclass implements Serializable
{
String s;
int i;
double d;
Myclass(String s, int i, double d)
{
this.d = d;
this.i = i;
this.s = s;
}
}
import java.io.*;
class serialization
{
public static void main(String[] args)
{
try
{
Myclass object1 = new Myclass("Hello", -7, 2.1e10);
FileOutputStream fos = new FileOutputStream("serial");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(object1);
oos.flush();
oos.close();
}
catch(Exception e)
{
System.out.println("Serialization" + e);
System.exit(0);
}
try
{
int x;
FileInputStream fis = new FileInputStream("serial");
ObjectInputStream ois = new ObjectInputStream(fis);
x = ois.readInt();
ois.close();
System.out.println(x);
}
catch (Exception e)
{
System.out.print("deserialization");
System.exit(0);
}
}
}
class Myclass implements Serializable
{
String s;
int i;
double d;
Myclass(String s, int i, double d)
{
this.d = d;
this.i = i;
this.s = s;
}
}
49. What type of members are not serialized?
50. Which of these interface extends DataInput interface?
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