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Java > Java SE, EE, ME > java > math > BigDecimal

java.math
Class BigDecimal

java.lang.Object
  extended by java.lang.Number
      extended by java.math.BigDecimal
All Implemented Interfaces:
Serializable, Comparable<BigDecimal>
See Also:
Top Examples, Source Code, movePointRight, movePointLeft, round, setScale, ulp, specified algorithm, floor, MathContext.UNLIMITED, RoundingMode.HALF_UP, ROUND_HALF_UP, toString(), BigInteger, SortedMap, SortedSet 
public BigDecimal abs()
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[1480]Display float number in differnt Locale
By vamshi vamshikrishna1 { at } yahoo { dot } com on 2005/07/13 23:20:51  Rate
float mynumber = 10000000.4875f; 
 NumberFormat form;     
 form=NumberFormat.getInstance ( new Locale ( "EN","Locale.UK" )  ) ;  
 BigDecimal bd=new BigDecimal ( mynumber ) ; 
 System.out.println ( bd.setScale ( 3,BigDecimal.ROUND_HALF_UP )  ) ; 
 
public BigDecimal abs(MathContext mc)
See Also:
ArithmeticException
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public BigDecimal add(BigDecimal augend)
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[656]Add two big numbers
By Anonymous on 2005/04/25 15:30:20  Rate
// add two big numbers 
 // submitted by DPB from IST-149 Java 1 NVCC class on Feb 7, 2004... 
 // The output produced will be: 
 // big1=123456789 big2=111111111 sum=234567900 
  
  
  public static void addTest (  )  
    {  
     BigDecimal big1 = new BigDecimal (  123456789.0D  ) ; 
     BigDecimal big2 = new BigDecimal (  111111111.0D  ) ; 
     BigDecimal sum = new BigDecimal (  0.0D  ) ; 
     sum = big1.add ( big2 ) ; // sum = big1 + big2; 
     System.out.println (  "big1=" + big1 + " big2=" + big2 + " sum=" + sum  ) ; 
    }  
  
  
 
public BigDecimal add(BigDecimal augend,
                      MathContext mc)
See Also:
ArithmeticException
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public BigDecimal(char[] in)
See Also:
NumberFormatException, BigDecimal(String)
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public BigDecimal(char[] in,
                  int offset,
                  int len)
See Also:
NumberFormatException, BigDecimal(String)
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public BigDecimal(char[] in,
                  int offset,
                  int len,
                  MathContext mc)
See Also:
NumberFormatException, ArithmeticException, BigDecimal(String)
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public BigDecimal(char[] in,
                  MathContext mc)
See Also:
NumberFormatException, ArithmeticException, BigDecimal(String)
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public BigDecimal(double val)
See Also:
NumberFormatException, valueOf(double), BigDecimal(String), Double.toString(double)
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[173]A BigDecimal rounding procedure
By mail { at } wlawson { dot } com on 2003/08/25 19:36:27  Rate
 /* a rounding procedure */ 
      java.math.BigDecimal round_hfinal = new java.math.BigDecimal ( hfinal ) ;  
       /* round to 4 dec. places */ 
      round_hfinal = round_hfinal.setScale ( 4, java.math.BigDecimal.ROUND_HALF_UP ) ;

[405]_
By Anonymous on 2003/09/20 09:50:01  Rate
BigDecimal bd = new BigDecimal ( 0,49 ) ; 
 System.out.print ( bd ) ;
public BigDecimal(double val,
                  MathContext mc)
See Also:
NumberFormatException, ArithmeticException, BigDecimal(double)
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[1865]Limiting the decimals in BigDecimal class
By Sagar Deshpande sagard79 { at } gmail { dot } com on 2007/02/03 15:12:56  Rate
public void giveRaise ( float raise )  {          
         MathContext temp = new MathContext ( 2 ) ; 
         double sal = this.salary.doubleValue (  ) ; 
         sal = sal * raise;         
         this.salary = this.salary.add ( new BigDecimal ( sal,temp )  ) ; 
  
  
      } 
public BigDecimal(int val)
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public BigDecimal(int val,
                  MathContext mc)
See Also:
ArithmeticException
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public BigDecimal(String val)
See Also:
NumberFormatException, BigDecimal(double), Double.toString(double), Float.toString(float), Character.digit(char, int), Character.isDigit(char), Integer.MAX_VALUE, Integer.MIN_VALUE
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[338]Convert Integer to BigDecimal
By Anonymous on 2003/08/07 15:18:49  Rate
ttlRest += 1; 
                   strTtlRest = Integer.toString ( ttlRest ) ; 
                   BigDecimal tmpTtlRest; 
                   tmpTtlRest = BigDecimal.valueOf ( strTtlRest ) ;

[515]Add 3 BigDecimal
By sonja_999 { at } hotmail { dot } com on 2003/11/15 07:56:55  Rate
/* 
  * BigDecimal.java 
  * 
  * Created on 14 November 2003, 17:20 
  */ 
 import java.math.BigDecimal.*; 
 /** 
  * 
  * @author ug36sxs 
  */ 
 public class BigDecimal  {  
      
     /** Creates a new instance of BigDecimal */ 
     public BigDecimal ( double bd )   {  
  
  
     /** 
      * @param args the command line arguments 
      */ 
      }  
     public BigDecimal add ( BigDecimal num )  
      {  
    
         return num; 
      }  
     public static void main ( String [  ]  args )   {  
        
             BigDecimal bd = new BigDecimal ( 100.01 ) ; 
             BigDecimal bd2 = new BigDecimal ( 100.00005 ) ; 
             BigDecimal bd3= new BigDecimal ( 100.00995 ) ; 
             bd = bd.add ( bd2.add ( bd3 )  ) ; 
           // System,out.obd. 
              
              
  
  
      
  }  
  } 
public BigDecimal(String val,
                  MathContext mc)
See Also:
NumberFormatException, ArithmeticException, BigDecimal(String)
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public BigDecimal(BigInteger val)
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public BigDecimal(BigInteger unscaledVal,
                  int scale)
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public BigDecimal(BigInteger unscaledVal,
                  int scale,
                  MathContext mc)
See Also:
ArithmeticException
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public BigDecimal(BigInteger val,
                  MathContext mc)
See Also:
ArithmeticException
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public BigDecimal(long val)
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public BigDecimal(long val,
                  MathContext mc)
See Also:
ArithmeticException
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public byte byteValueExact()
See Also:
ArithmeticException
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public int compareTo(Object o)
See Also:
Comparable, compareTo(java.math.BigDecimal), ClassCastException
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[798]Use JOptionPane
By Anonymous on 2005/05/09 03:54:07  Rate
import javax.swing.JOptionPane; 
 import java.lang.String; 
 public class DadosTexto 
  {  
   public static void main ( String args [  ]  )  
    {   
      String TextEntr;  
      int numVogais , numCons, numEspac, eBrc, eVog, igual ; 
      String Vogais [  ]  =  { "a","e","i","o","u","A","E","O","U" } ; 
      char ch;  
      numEspac = 0; 
      numVogais= 0; 
      numCons = 0; 
      for ( int i=0; i < 10; i++ )  {  
        TextEntr = JOptionPane.showInputDialog ( "Digite o texto a ser analisado:" ) ; 
        JOptionPane.showMessageDialog ( null,"Seu texto digitado ?? "+TextEntr ) ; 
        eBrc = 0; 
        eVog = 0; 
        for  ( int j=0; j < TextEntr.length (  ) ;j++ )  {  
            ch = TextEntr.charAt ( j ) ; 
            igual = ch.compareTo ( " " ) ;    
            if  ( igual==0 )  {  
              numEspac++; 
              eBrc = 1; 
             }    
            else  {  
                for  ( int jvg=0; jvg < 9;jvg++ )  {  
                   igual = ch.compareTo ( Vogais [ jvg ]  ) ; //onde strC um String que cont??m a letra "A" 
                   if  ( igual==0 )  {  
                     {  
                      numVogais++; 
                      jvg = 8; 
                      eVog = 1; 
                      System.out.println ( ch+"?? vogal" ) ; 
                    }  
                 }  
              }  
           }     
          if  ( eBrc = 0 && eVog = 0 )  {  
                numCons++; 
           }  
         JOptionPane.showMessageDialog ( null,"O texto digitado tem "+ numCons+" consoantes , "+ 
                        numVogais+" vogais e "+numEspac+" espa??os em branco." ) ;  
        }  
      }  
    }  
  } 
public int compareTo(BigDecimal val)
See Also:
Comparable, compareTo
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public BigDecimal divide(BigDecimal divisor)
See Also:
ArithmeticException
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public BigDecimal divide(BigDecimal divisor,
                         int roundingMode)
See Also:
ROUND_UNNECESSARY, ROUND_HALF_EVEN, ROUND_HALF_DOWN, ROUND_HALF_UP, ROUND_FLOOR, ROUND_CEILING, ROUND_DOWN, ROUND_UP, IllegalArgumentException, ArithmeticException, divide(BigDecimal, RoundingMode)
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public BigDecimal divide(BigDecimal divisor,
                         int scale,
                         int roundingMode)
See Also:
ROUND_UNNECESSARY, ROUND_HALF_EVEN, ROUND_HALF_DOWN, ROUND_HALF_UP, ROUND_FLOOR, ROUND_CEILING, ROUND_DOWN, ROUND_UP, IllegalArgumentException, ArithmeticException, divide(BigDecimal, int, RoundingMode)
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[382]BigDecimal division
By Anonymous on 2003/10/30 16:41:28  Rate
BigDecimal oldShipCharge = new BigDecimal ( 30.00 ) ; 
 BigDecimal newShipCharge = new BigDecimal ( 10.00 ) ; 
  
  
 /* The result is accurate up to 10 decimal places */ 
 BigDecimal ratio = newShipCharge.divide (  
   oldShipCharge, 10, BigDecimal.ROUND_HALF_EVEN ) ; 
 

[713]_
By Anonymous on 2004/03/30 10:20:02  Rate
10.divide ( java.math.BigDecimal,3,2 ) 
public BigDecimal divide(BigDecimal divisor,
                         int scale,
                         RoundingMode roundingMode)
See Also:
ArithmeticException
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public BigDecimal divide(BigDecimal divisor,
                         MathContext mc)
See Also:
ArithmeticException
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public BigDecimal divide(BigDecimal divisor,
                         RoundingMode roundingMode)
See Also:
ArithmeticException
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public BigDecimal[] divideAndRemainder(BigDecimal divisor)
See Also:
remainder(java.math.BigDecimal, java.math.MathContext), divideToIntegralValue(java.math.BigDecimal, java.math.MathContext), ArithmeticException
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public BigDecimal[] divideAndRemainder(BigDecimal divisor,
                                       MathContext mc)
See Also:
remainder(java.math.BigDecimal, java.math.MathContext), divideToIntegralValue(java.math.BigDecimal, java.math.MathContext), ArithmeticException
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public BigDecimal divideToIntegralValue(BigDecimal divisor)
See Also:
ArithmeticException
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public BigDecimal divideToIntegralValue(BigDecimal divisor,
                                        MathContext mc)
See Also:
ArithmeticException
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public double doubleValue()
See Also:
Number, Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY
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public boolean equals(Object x)
See Also:
hashCode(), compareTo(java.math.BigDecimal)
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public float floatValue()
See Also:
Number, Float.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY
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public int hashCode()
See Also:
equals(Object), Object
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public int intValue()
See Also:
Number
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public int intValueExact()
See Also:
ArithmeticException
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public long longValue()
See Also:
Number
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public long longValueExact()
See Also:
ArithmeticException
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public BigDecimal max(BigDecimal val)
See Also:
compareTo(java.math.BigDecimal)
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public BigDecimal min(BigDecimal val)
See Also:
compareTo(java.math.BigDecimal)
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public BigDecimal movePointLeft(int n)
See Also:
ArithmeticException
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public BigDecimal movePointRight(int n)
See Also:
ArithmeticException
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public BigDecimal multiply(BigDecimal multiplicand)
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public BigDecimal multiply(BigDecimal multiplicand,
                           MathContext mc)
See Also:
ArithmeticException
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public BigDecimal negate()
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[105]Various BigDecimal operations
By Anonymous on 2002/10/18 18:00:05  Rate
public void calculateImagine ( BigDecimal a,BigDecimal b, BigDecimal c )  {  
  
  
 BigDecimal discriminant = getDiscriminantExact ( a,b,c ) ; 
 BigDecimal two = new BigDecimal ( "2.0" ) ; 
 BigDecimal x =  ( b.negate (  )  ) .divide ( a.multiply ( two ) ,30,BigDecimal.ROUND_HALF_UP ) ; 
 BigDecimal y = sqrt ( discriminant.negate (  )  ) .divide ( a.multiply ( two ) ,30,BigDecimal.ROUND_HALF_UP ) ; 
 c2.setSpecial ( correctScale ( x.negate (  )  ) .toString (  ) +"+i*"+correctScale ( y.negate (  )  ) .toString (  ) , 
 correctScale ( x.negate (  )  ) .toString (  ) +"-i*"+correctScale ( y.negate (  )  ) .toString (  )  ) ; 
  
  
  }  
 
public BigDecimal negate(MathContext mc)
See Also:
ArithmeticException
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public static final BigDecimal ONE
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public BigDecimal plus()
See Also:
negate()
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public BigDecimal plus(MathContext mc)
See Also:
round(MathContext), ArithmeticException
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public BigDecimal pow(int n)
See Also:
ArithmeticException, ONE
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public BigDecimal pow(int n,
                      MathContext mc)
See Also:
ArithmeticException, ONE
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public int precision()
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public BigDecimal remainder(BigDecimal divisor)
See Also:
ArithmeticException
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public BigDecimal remainder(BigDecimal divisor,
                            MathContext mc)
See Also:
divideToIntegralValue(java.math.BigDecimal, java.math.MathContext), ArithmeticException
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public BigDecimal round(MathContext mc)
See Also:
plus(MathContext), ArithmeticException
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public static final int ROUND_CEILING
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public static final int ROUND_DOWN
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[206]Round to two decimal places
By Anonymous on 2004/06/08 11:04:33  Rate
//round to two decimal places 
 import java.math.*; 
 public class RoundTest  {  
         public static void main  ( String [  ]  args )   {  
                 BigDecimal bd = new BigDecimal ( 1234.5678 ) ; 
                 bd = bd.setScale ( 2, BigDecimal.ROUND_DOWN ) ; 
                 System.out.println ( bd ) ; 
          }  
  }  
 
public static final int ROUND_FLOOR
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public static final int ROUND_HALF_DOWN
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public static final int ROUND_HALF_EVEN
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public static final int ROUND_HALF_UP
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public static final int ROUND_UNNECESSARY
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public static final int ROUND_UP
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public int scale()
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public BigDecimal scaleByPowerOfTen(int n)
See Also:
ArithmeticException
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public BigDecimal setScale(int newScale)
See Also:
setScale(int, RoundingMode), setScale(int, int), ArithmeticException
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public BigDecimal setScale(int newScale,
                           int roundingMode)
See Also:
ROUND_UNNECESSARY, ROUND_HALF_EVEN, ROUND_HALF_DOWN, ROUND_HALF_UP, ROUND_FLOOR, ROUND_CEILING, ROUND_DOWN, ROUND_UP, IllegalArgumentException, ArithmeticException, setScale(int, RoundingMode)
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[855]Change BigDecimal scale
By a on 2005/04/29 11:42:11  Rate
balance.setScale ( 2, BigDecimal.ROUND_HALF_UP ) ;
public BigDecimal setScale(int newScale,
                           RoundingMode roundingMode)
See Also:
ArithmeticException
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public short shortValueExact()
See Also:
ArithmeticException
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public int signum()
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public BigDecimal stripTrailingZeros()
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public BigDecimal subtract(BigDecimal subtrahend)
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public BigDecimal subtract(BigDecimal subtrahend,
                           MathContext mc)
See Also:
ArithmeticException
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public static final BigDecimal TEN
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public BigInteger toBigInteger()
See Also:
toBigIntegerExact()
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public BigInteger toBigIntegerExact()
See Also:
ArithmeticException
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public String toEngineeringString()
See Also:
string constructor, toString()
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public String toPlainString()
See Also:
toEngineeringString(), toString(), string constructor
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public String toString()
See Also:
BigDecimal(java.lang.String), Character.forDigit(int, int), Object, setScale, toEngineeringString(), NumberFormat
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public BigDecimal ulp()
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public BigInteger unscaledValue()
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public static BigDecimal valueOf(double val)
See Also:
NumberFormatException, Double.toString(double)
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public static BigDecimal valueOf(long val)
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public static BigDecimal valueOf(long unscaledVal,
                                 int scale)
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public static final BigDecimal ZERO
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