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java.lang
Class Float

java.lang.Object
  extended by java.lang.Number
      extended by java.lang.Float
All Implemented Interfaces:
Serializable, Comparable<Float>
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Top Examples, Source Code
public byte byteValue()
See Also:
Number
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public static int compare(float f1,
                          float f2)
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public int compareTo(Float anotherFloat)
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Comparable.compareTo(Object)
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[1011]Float operation
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/03 11:58:34  Rate
Float f1 = new Float (  1  ) ; 
 Float f2 = new Float (  1  ) ; 
 Float f3 = new Float (  2  ) ; 
 Float f4 = new Float (  -2  ) ; 
  
  
 if (  f1.compareTo (  f2  )  == 0  )  
     System.out.println ( "Equal" ) ; 
 else {  
     System.out.println ( "Not Equal" ) ; 
     if (  f1.compareTo (  f2  )  == 1  )  
         System.out.println ( "f1 greater than f2" ) ; 
     else System.out.println ( "f1 less than f2" ) ; 
  }  
  
  
 if (  f1.compareTo (  f3  )  == 0 )  
     System.out.println ( "Equal" ) ; 
 else {  
     System.out.println ( "Not Equal" ) ; 
    if (  f1.compareTo (  f3  )  == 1  )  
         System.out.println ( " f1 greater than f3" ) ; 
     else System.out.println ( " f1 less than f3" ) ; 
  }  
  
  
 if (  f1.compareTo (  f4  )  == 0 )  
     System.out.println ( "Equal" ) ; 
 else {  
     System.out.println ( "Not Equal" ) ; 
    if (  f1.compareTo (  f4  )  == 1  )  
         System.out.println ( " f1 greater than f4" ) ; 
     else System.out.println ( " f1 less than f4" ) ; 
  }  
 //outputs the lines: 
 // Equal 
 // Not Equal 
 // f1 less than f3 
 // Not Equal 
 // f1 greater than f4 
  
  
 
public int compareTo(Object o)
See Also:
Comparable
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public double doubleValue()
See Also:
Number
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[1001]Convert string to a float
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/03 11:45:40  Rate
String s = "9"; 
 Float f1 = new Double (  s  ) ; 
 double d = f1.doubleValue (  ) ; 
 System.out.println (  d  ) ; 
  
  
 //outputs the line: 
 // 9.0 
 
public boolean equals(Object obj)
See Also:
floatToIntBits(float)
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public Float(double value)
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[1004]Convert double to a float
By Jesse L { dot } Jackson - -parisjackson { at } yahoo { dot } com on 2004/10/03 11:50:36  Rate
double d = 23; 
 Float f1 = new Float (  d  ) ; 
  
  
 System.out.println (  f1.floatValue (  )   ) ; 
  
  
 //outputs the line: 
 // 23.0 
 
public Float(float value)
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[1003]_
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/03 11:49:11  Rate
float f = 23; 
 Float f1 = new Float (  f  ) ; 
  
  
 System.out.println (  f1.floatValue (  )   ) ; 
  
  
 //outputs the line: 
 // 23.0 
 
public Float(String s)
      throws NumberFormatException
See Also:
valueOf(java.lang.String)
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[1005]_
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/03 11:51:11  Rate
String s = "9"; 
 Float f1 = new Float (  s  ) ; 
 float f = f1.floatValue (  ) ; 
 System.out.println (  f  ) ; 
  
  
 //outputs the line: 
 // 9.0 
 
public static int floatToIntBits(float value)
See Also:
intBitsToFloat(int)
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public static int floatToRawIntBits(float value)
See Also:
intBitsToFloat(int)
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public float floatValue()
See Also:
Number
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[1002]_
By Jesse L { dot } Jackson on 2004/10/03 11:46:52  Rate
String s = "9"; 
 Float f1 = new Float (  s  ) ; 
 float f = f1.floatValue (  ) ; 
 System.out.println (  f  ) ; 
  
  
 //outputs the line: 
 // 9.0 
 
public int hashCode()
See Also:
Hashtable, Object.equals(java.lang.Object), floatToIntBits(float)
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public static float intBitsToFloat(int bits)
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public int intValue()
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Number
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[1834]convert float to int
By Kristen Bains on 2006/10/22 14:18:04  Rate
float val = 3.14; 
 Float fval = new Float ( val ) ; 
 int ival = fval.intValue (  ) ; 
 System.out.println ( "val is " + val + " int is " + ival ) ; 
 
public boolean isInfinite()
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public static boolean isInfinite(float v)
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public boolean isNaN()
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[26]If we can not calculate an average we will return zero
By Max Okist on 2002/08/07 23:25:53  Rate
Double d = new Double (  sum / count  ) ; 
          
 // If we can't calculate an average we will return zero. 
 if  ( d == null || d.isNaN (  )  )   {  
    d = new Double ( 0.0 ) ; 
  } 

[1806]check the value of the textbox
By shamshir_alam { at } rediffmail { dot } com on 2006/08/17 00:43:45  Rate
i want to check the value of the text box is number or not 
public static boolean isNaN(float v)
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public long longValue()
See Also:
Number
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public static final float MAX_VALUE
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[1009]Get Float max value
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/03 11:56:21  Rate
float f = Float.MAX_VALUE; 
 System.out.println (  f  ) ; 
  
  
 //outputs the line 
 // 3.4028235E38 
 // 
 //MAX_VALUE is a constant - it is the highest value that a float or  
 // the floatValue of an Float can have 
 
public static final float MIN_VALUE
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[1010]Get Float min value
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/03 11:57:28  Rate
float f = Float.MIN_VALUE; 
 System.out.println (  f  ) ; 
  
  
 //outputs the line 
 // 1.4E-45 
 
public static final float NaN
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public static final float NEGATIVE_INFINITY
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public static float parseFloat(String s)
                        throws NumberFormatException
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valueOf(String)
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[452]Parse a string to a float
By roe { at } ninje { dot } com on 2003/10/11 20:36:48  Rate
 try 
      {  
       float rate = Float.parseFloat ( myField.getText (  )  ) ; 
      }  
     catch  ( NumberFormatException ex )  
      {  
       msgs.setText ( "Error- invalid user input. " + ex ) ; 
      } 

[621]_
By Anonymous on 2004/01/22 09:59:39  Rate
Float theFloat = new Float ( parseFloat ( floatString )  ) ;
public static final float POSITIVE_INFINITY
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public short shortValue()
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Number
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public static final int SIZE
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public static String toHexString(float f)
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Integer.toString
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public String toString()
See Also:
toString(float), Object
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[1006]Convert float to string
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/03 11:52:26  Rate
Float f1 = new Float (  100  ) ; 
 String s = f1.toString (  ) ; 
  
  
 System.out.println (  s  ) ; 
  
  
 //outputs the line: 
 // 100.0 
 
public static String toString(float f)
See Also:
NumberFormat, Integer.toString(int)
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[1007]_
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/03 11:53:05  Rate
System.out.println (  Float.toString (  50.5  )   ) ; 
  
  
 //outputs the line: 
 // 50.5 
 
public static final Class<Float> TYPE
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public static Float valueOf(float f)
See Also:
Float(float)
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public static Float valueOf(String s)
                     throws NumberFormatException
See Also:
NumberFormat, String.trim()
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[1008]_
By Jesse L { dot } Jackson - parisjackson { at } yahoo { dot } com on 2004/10/03 11:54:16  Rate
String s = "14.5"; 
 Float f1 = Float.valueOf (  s  ) ; 
 System.out.println (  f1.toString (  )   ) ; 
  
  
 //outputs the line 
 // 14.5 
 
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