Apex Reference Guide
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Double Class
Namespace
Usage
For more information on Double, see Double Data Type.
Double Methods
The following are methods for Double.
format()
Signature
public String format()
Return Value
Type: String
Example
1Double myDouble = 1261992;
2system.assertEquals('1,261,992', myDouble.format());intValue()
Signature
public Integer intValue()
Return Value
Type: Integer
Example
1Double DD1 = double.valueOf('3.14159');
2Integer value = DD1.intValue();
3system.assertEquals(value, 3);longValue()
Signature
public Long longValue()
Return Value
Type: Long
Example
1Double myDouble = 421994;
2Long value = myDouble.longValue();
3System.assertEquals(421994, value);round()
Signature
public Long round()
Return Value
Type: Long
Example
1Double D1 = 4.5;
2Long L1 = D1.round();
3System.assertEquals(5, L1);
4
5Double D2= 4.2;
6Long L2= D2.round();
7System.assertEquals(4, L2);
8
9Double D3= -4.7;
10Long L3= D3.round();
11System.assertEquals(-5, L3);valueOf(stringToDouble)
Signature
public static Double valueOf(String stringToDouble)
Parameters
-
stringToDouble:
Type: String
Return Value
Type: Double
Example
1Double DD1 = double.valueOf('3.14159');valueOf(fieldValue)
Signature
public static Double valueOf(Object fieldValue)
Parameters
-
fieldValue:
Type: Object
Return Value
Type: Double
Usage
Use this method with the OldValue or NewValue fields of history sObjects, such as AccountHistory, when the field type corresponds to a Double type, like a number field.
Example
1List<AccountHistory> ahlist =
2 [SELECT Field,OldValue,NewValue
3 FROM AccountHistory];
4for(AccountHistory ah : ahlist) {
5 System.debug('Field: ' + ah.Field);
6 if (ah.field == 'NumberOfEmployees') {
7 Double oldValue =
8 Double.valueOf(ah.OldValue);
9 Double newValue =
10 Double.valueOf(ah.NewValue);
11}