java.lang.Object
java.lang.Number
java.lang.Integer
- All Implemented Interfaces:
- Serializable, Comparable<Integer>
- See Also:
- Top Examples, Source Code,
numberOfTrailingZeros, highestOneBit
public static int bitCount(int i)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public byte byteValue()
- See Also:
- Number
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[987]byteValue of 250 is -6
By parisjackson { at } yahoo { dot } com on 2004/10/02 12:01:12 Rate
Integer i1 = new Integer ( 250 ) ;
byte b = i1.byteValue ( ) ;
System.out.println ( i1.toString ( ) ) ;
System.out.println ( b ) ;
i1 = new Integer ( 257 ) ;
b = i1.byteValue ( ) ;
System.out.println ( i1.toString ( ) ) ;
System.out.println ( b ) ;
i1 = new Integer ( 512 ) ;
b = i1.byteValue ( ) ;
System.out.println ( i1.toString ( ) ) ;
System.out.println ( b ) ;
//outputs the line:
// 250
// -6
// 257
// 1
// 512
// 0
public int compareTo(Integer anotherInteger)
- See Also:
- Comparable, compareTo
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[988]Integer comparison
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/02 12:09:44 Rate
Integer i1 = new Integer ( 1 ) ;
Integer i2 = new Integer ( 1 ) ;
Integer i3 = new Integer ( 2 ) ;
Integer i4 = new Integer ( -2 ) ;
if ( i1.compareTo ( i2 ) == 0 )
System.out.println ( "Equal" ) ;
else {
System.out.println ( "Not Equal" ) ;
if ( i1.compareTo ( i2 ) == 1 )
System.out.println ( "i1 greater than i2" ) ;
else System.out.println ( "i1 less than i2" ) ;
}
if ( i1.compareTo ( i3 ) == 0 )
System.out.println ( "Equal" ) ;
else {
System.out.println ( "Not Equal" ) ;
if ( i1.compareTo ( i3 ) == 1 )
System.out.println ( " i1 greater than i3" ) ;
else System.out.println ( " i1 less than i3" ) ;
}
if ( i1.compareTo ( i4 ) == 0 )
System.out.println ( "Equal" ) ;
else {
System.out.println ( "Not Equal" ) ;
if ( i1.compareTo ( i4 ) == 1 )
System.out.println ( " i1 greater than i4" ) ;
else System.out.println ( " i1 less than i4" ) ;
}
//outputs the lines:
// Equal
// Not Equal
// i1 less than i3
// Not Equal
// i1 greater than i4
public int compareTo(Object o)
- See Also:
Comparable
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[703]_
By Anonymous on 2005/07/14 14:19:20 Rate
Integer result = 144
if ( result.compareTo ( 144 ) == 0 )
return true;
else return false;
public static Integer decode(String nm)
throws NumberFormatException- See Also:
parseInt(java.lang.String, int)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public double doubleValue()
- See Also:
- Number
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[990]Convert integer to double
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/02 14:25:05 Rate
Integer i1 = new Integer ( 1 ) ;
double d = i1.doubleValue ( ) ;
System.out.println ( d ) ;
//outputs the line:
// 1.0
public boolean equals(Object obj)
- See Also:
Hashtable, Object.hashCode()
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[986]_
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:47:56 Rate
Integer i1 = new Integer ( 1 ) ;
Integer i2 = new Integer ( 1 ) ;
Integer i3 = new Integer ( 2 ) ;
if ( i1.equals ( i2 ) )
System.out.println ( "Equal" ) ;
else
System.out.println ( "Not Equal" ) ;
if ( i1.equals ( i3 ) )
System.out.println ( "Equal" ) ;
else
System.out.println ( "Not Equal" ) ;
//outputs the lines:
// Equal
// Not Equal
public float floatValue()
- See Also:
- Number
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[991]Convert integet to float
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/02 14:27:03 Rate
Integer i1 = new Integer ( 1 ) ;
float f = i1.floatValue ( ) ;
System.out.println ( f ) ;
//outputs the line:
// 1.0
public static Integer getInteger(String nm)
- See Also:
System.getProperty(java.lang.String, java.lang.String), System.getProperty(java.lang.String)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static Integer getInteger(String nm,
int val)- See Also:
System.getProperty(java.lang.String, java.lang.String), System.getProperty(java.lang.String)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static Integer getInteger(String nm,
Integer val)- See Also:
decode(java.lang.String), System.getProperty(java.lang.String, java.lang.String), System.getProperty(java.lang.String), valueOf(java.lang.String, int)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public int hashCode()
- See Also:
Hashtable, Object.equals(java.lang.Object)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static int highestOneBit(int i)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public Integer(int value)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[975]_
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:33:44 Rate
int i = 23;
Integer i1 = new Integer ( i ) ;
System.out.println ( i1.intValue ( ) ) ;
public Integer(String s)
throws NumberFormatException- See Also:
parseInt(java.lang.String, int)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[974]_
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:32:15 Rate
String s = "9";
Integer i1 = new Integer ( s ) ;
int i = i1.intValue ( ) ;
System.out.println ( i ) ;
public int intValue()
- See Also:
- Number
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[85]convert the String to ahexadecimal
By Anonymous on 2004/05/20 09:11:09 Rate
//read the background color parameter
String bgColorStr=getParameter ( "bg_color" ) ;
int intvalue;
//convert the String to an integer, base is 16 ( hexadecimal )
intvalue=Integer.parseInt ( bgColorStr, 16 ) ;
public long longValue()
- See Also:
- Number
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static int lowestOneBit(int i)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static final int MAX_VALUE
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[984]Integer max value
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:43:28 Rate
int i = Integer.MAX_VALUE;
System.out.println ( i ) ;
//outputs the line
// 2147483647
//
//MAX_VALUE is a constant - it is the highest value that an int or the
//intValue of an Integer can have
public static final int MIN_VALUE
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[985]Integer Min value
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:46:37 Rate
int i = Integer.MIN_VALUE;
System.out.println ( i ) ;
//outputs the line
// -2147483648
//
//MIN_VALUE is a constant - it is the lowest value that an int or the
//intValue of an Integer can have
public static int numberOfLeadingZeros(int i)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static int numberOfTrailingZeros(int i)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static int parseInt(String s)
throws NumberFormatException- See Also:
-
parseInt(java.lang.String, int)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[307]parseInt actually throws 2 exceptions
By Anonymous on 2004/09/16 00:05:31 Rate
// NOTE: parseInt actually throws 2 exceptions,
// NullPointerException & NumberFormatException
try
{
String s;
int i = Integer.parseInt ( s ) ;
}
catch ( NullPointerException npe ) {
//some error handling
}
catch ( NumberFormatException nfe ) {
//some error handling
}
public static int parseInt(String s,
int radix)
throws NumberFormatException- See Also:
-
Character.MAX_RADIX, Character.MIN_RADIX, Character.digit(char, int)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[1458]Test ability to convert String to HEX
By rufustopheles on 2005/06/23 15:36:07 Rate
// How about test ability to convert String to HEX
// NOTE: parseInt throws 2 exceptions,
// NullPointerException & NumberFormatException
try
{
// attempt convert to hex
String s = "1234567890"
int i = Integer.parseInt ( s,16 ) ;
System.out.print ( "OK. Hex Value of: " + s + " = " + i ) ;
}
catch ( NullPointerException npe ) {
// add some error handling here
}
catch ( NumberFormatException nfe ) {
// add some error handling here
}
public static int reverse(int i)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static int reverseBytes(int i)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static int rotateLeft(int i,
int distance)- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static int rotateRight(int i,
int distance)- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public short shortValue()
- See Also:
- Number
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static int signum(int i)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static final int SIZE
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static String toBinaryString(int i)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[976]Convert an integer to binary
By parisjackson { at } yahoo { dot } com on 2004/12/01 00:26:47 Rate
int i = 15;
String s = Integer.toBinaryString ( i ) ;
System.out.println ( s ) ;
//outputs the line:
// 1111
public static String toHexString(int i)
- See Also:
String.toUpperCase()
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[977]Integer to Hex
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:36:04 Rate
int i = 15;
String s = Integer.toHexString ( i ) ;
System.out.println ( s ) ;
//outputs the line:
// f[1535]byte to hex
By Anonymous on 2005/09/13 07:18:00 Rate
public static String byte_to_hex_string ( byte b )
{
String retval = "";
int i = ( int ) ( b ) ;
String s = Integer.toHexString ( i | 0x100 ) ;
if ( s.length ( ) == 3 )
{
retval = s.substring ( 1 ) ;
}
else
{
retval = s.substring ( 6 ) ;
}
return retval;
}
public static String toOctalString(int i)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[978]Integer to Octal
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:36:25 Rate
int i = 15;
String s = Integer.toOctalString ( i ) ;
System.out.println ( s ) ;
//outputs the line:
// 17
public String toString()
- See Also:
- Object,
toString(int)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[979]_
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:37:12 Rate
Integer i1 = new Integer ( 100 ) ;
String s = i1.toString ( ) ;
System.out.println ( s ) ;
//outputs the line:
// 100
public static String toString(int i)
- See Also:
toString(int, int)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[980]_
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:38:29 Rate
System.out.println ( Integer.toString ( 50 ) ) ;
//outputs the line:
// 50
public static String toString(int i,
int radix)- See Also:
Character.MIN_RADIX, Character.MAX_RADIX, String.toUpperCase()
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[981]Integer to binary, octal, hex
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:39:30 Rate
System.out.println ( Integer.toString ( 15, 2 ) ) ;
System.out.println ( Integer.toString ( 15, 8 ) ) ;
System.out.println ( Integer.toString ( 15, 16 ) ) ;
//outputs the lines:
// 1111
// 17
// f
public static final Class<Integer> TYPE
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static Integer valueOf(int i)
- See Also:
Integer(int)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
public static Integer valueOf(String s)
throws NumberFormatException- See Also:
-
parseInt(java.lang.String)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[982]_
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:40:54 Rate
String s = "14";
Integer i1 = Integer.valueOf ( s ) ;
System.out.println ( i1.toString ( ) ) ;
//outputs the line
// 14
public static Integer valueOf(String s,
int radix)
throws NumberFormatException- See Also:
-
parseInt(java.lang.String, int)
- Geek's Notes:
- Description Add your codes or notes Search More Java Examples
[983]Binary, octal, hex to decimal
By parisjackson { at } yahoo { dot } com on 2004/10/02 11:41:52 Rate
String s1 = "1110";
String s2 = "16";
String s3 = "e";
Integer i1 = Integer.valueOf ( s1, 2 ) ;
Integer i2 = Integer.valueOf ( s2, 8 ) ;
Integer i3 = Integer.valueOf ( s3, 16 ) ;
System.out.println ( i1.toString ( ) ) ;
System.out.println ( i2.toString ( ) ) ;
System.out.println ( i3.toString ( ) ) ;
//outputs the lines
// 14
// 14
// 14 
Java API By Example, From Geeks To Geeks.