Long Wrapper Class

Long Wrapper Class:

• Long Class is presented in java.lang package.
• java.lang.Long class is used to represent primitive Long Value to Long object.

Long Class :

Float Class Definition

1. public final class Long
2. extends Number 
3. implements Comparable<Long>

Constructors:

1.Long(long value):

• The Constructor Long(long value) represents the specified long argument.

2.Long(String s):

• The Constructor Long (String s) represents the long value indicated by the String parameter.

Methods:

1.public static int bitCount(long i); Program:

1. package com.instanceofjava; 
2. import java.lang.*; 
3.  
4. public class LongExample { 
5.  
6. public static void main(String[] args) {
7.  
8.   long l = 4561; 
9. 
   
10.  System.out.println("Number = " + l);
11.  System.out.println("Binary = " + Long.toBinaryString(l));
12.  System.out.println("Number of one bits = " + Long.bitCount(l));
13.  
14. }
15. }

Output:

1. Number = 4561 
2. Binary = 1000111010001 
3. Number of one bits = 6

2.public byte byteValue():

This method returns value of long as byte.

Program:

 

1. package com.instanceofjava;
2.  import java.lang.*;
3. 
   
4. public class LongExample {
5. 
   
6. public static void main(String[] args) {
7. 
   
8.  Long obj = new Long(30);
9. 
   
10.  byte b = obj.byteValue();
11.  System.out.println("Value of b = " + b);
12.  
13.  }
14. }

Output:

1. Value of b = 30

3.public int compareTo(Long anotherLong):

Program:

1. package com.instanceofjava;
2. import java.lang.*;
3. 
   
4. public class LongExample {
5. 
   
6. public static void main(String[] args) {
7.  
8.    Long a = new Long(63255);
9.   Long b = new Long(71678);
10.  
11.    int result=  a.compareTo(b);
12.    ifresult> 0) {
13.    System.out.println("a is greater than b");
14.    }
15.    else ifresult< 0) {
16.    System.out.println("a is less than b");
17.    }
18.    else {
19.    System.out.println("a is equal to b");
20.    }
21.  
22.    }
23. }

Output:

1. a is less than b

4.public static Long decode(String nm) throws NumberFormatException:

Program:

1. package com.instanceofjava;
2. import java.lang.*;
3. 
   
4. public class LongExample{
5. 
   
6.  public static void main(String[] args) {
7. 
   
8.    Long l = new Long(10);
9.    String str = "57820";
10.    System.out.println("Number = " + l.decode(str));
11.  
12.   }
13. }

Output:

1. 57820