The java.math.BigDecimal Class gives its client finish control over adjusting conduct, compelling the client to expressly indicate an adjusting conduct for operations capable of discarding precision. The java.math.BigDecimal Class is used to perform operations for hashing, comparing. Following is the syntax declaration of the java.math.BigDecimal Class. [java] public class BigDecimal extends Number implements Comparable<BigDecimal> [/java]

Following are the constructors of the java.math.BigDecimal Class.

Following are the common using methods of the java.math.BigDecimal Class.

The functionality of java.math.BigDecimal.abs() method is to give back a BigDecimal whose esteem is the absolute estimation of this BigDecimal. Following is the syntax declaration of the method. [java]public BigDecimal abs()[/java] DemoBigDecimal.java [java] package com.SPlessons; import java.math. *; public class DemoBigDecimal { public static void main(String[] args) { // create 2 BigDecimal objects BigDecimal bg1, bg2; // assign value to bg1 bg1 = new BigDecimal("-79"); // value before applying abs System.out.println("Value is " + bg1); // assign absolute value of bg1 to bg2 bg2 = bg1.abs(); // print bg2 value System.out.println("Absolute value is " + bg2); } } [/java] The java.math.BigDecimal.abs() is used to display the absolute value. Output: Now compile the code result will be as follows. [java] Value is 79 Absolute value is 79 [/java]

The functionality of the java.math.BigDecimal.compareTo(BigDecimal val) method is to contrast the BigDecimal and the predetermined BigDecimal. Following is the syntax declaration of the method. [java]public int compareTo(BigDecimal val)[/java] DemoBigDecimal.java [java] package com.SPlessons; import java.math. *; public class DemoBigDecimal { public static void main(String[] args) { // create 2 BigDecimal objects BigDecimal bg1, bg2; bg1 = new BigDecimal("100"); bg2 = new BigDecimal("120"); //create int object int res; res = bg1.compareTo(bg2); // compare bg1 with bg2 String str1 = "Both values are equal "; String str2 = "First Value is greater "; String str3 = "Second value is greater"; if( res == 0 ) System.out.println( str1 ); else if( res == 1 ) System.out.println( str2 ); else if( res == -1 ) System.out.println( str3 ); } } [/java] In the above example, the developer is comparing two values that are 100 and 120. According to the logic the second value large so it will be printed. Output: Now compile the code result will be as follows. [java] Second value is greater [/java]

The functionality of the java.math.BigDecimal.doubleValue() method is to convert bigdecimal value as double. Following is the syntax declaration of the method. [java]public double doubleValue()[/java] DemoBigDecimal.java [java] package com.SPlessons; import java.math. *; public class DemoBigDecimal { public static void main(String[] args) { // create a BigDecimal object BigDecimal bg; // create a Double object Double d; bg=new BigDecimal("4321"); // assign the converted value of bg to d d=bg.doubleValue(); String str = "Double value of " + bg + " is " + d; // print d value System.out.println( str );; } } [/java] The value of the BigDecimal will be changed as the double value. Output: Now compile the code result will be as follows. [java] Double value of 4321 is 4321.0 [/java]

The functionality of the java.math.BigDecimal.hashCode() method is To return the hash code of the BigDecimal. Following is the syntax declaration of the method. [java]public int hashCode()[/java] DemoBigDecimal.java [java] // create 3 BigDecimal objects BigDecimal bg1, bg2, bg3; // create 3 int objects int i1, i2, i3; bg1 = new BigDecimal("125"); bg2 = new BigDecimal("125.50"); bg3 = new BigDecimal("125.80"); // assign the HashCode value of bg1, bg2, bg3 to i1, i2, i3 // respectively i1 = bg1.hashCode(); i2 = bg2.hashCode(); i3 = bg3.hashCode(); String str1 = "HashCode of " + bg1 + " is " + i1; String str2 = "HashCode of " + bg2 + " is " + i2; String str3 = "HashCode of " + bg3 + " is " + i3; // print i1, i2, i3 values System.out.println( str1 ); System.out.println( str2 ); System.out.println( str3 );[/java] Every number will have its own hash value, in the above example, the developer has given three integers to get the hashcode. Output: Now compile the code result will be as follows. [java] HashCode of 135 is 4185 HashCode of 132.50 is 410752 HashCode of 185.80 is 575982 [/java]

• The java.math.BigDecimal.intValue() is used to return BigDecimal value as int value.
• The java.math.BigDecimal.intValueExact() method is used to search for lost data.
• The java.math.BigDecimal.equals() method is used to compare two objects equally.