BigDecimal類floatValue()方法 (BigDecimal Class floatValue() method)

• floatValue() method is available in java.math package.

  floatValue()方法在java.math包中可用。

• floatValue() method is used to convert a BigDecimal to a float value and when this BigDecimal magnitude is not in a range of float so it will be changed to Float.POSITIVE_INFINITY or Float.NEGATIVE_INFINITY.

  floatValue()方法用于將BigDecimal轉(zhuǎn)換為float值，并且當(dāng)此BigDecimal量值不在float范圍內(nèi)時，它將被更改為Float.POSITIVE_INFINITY或Float.NEGATIVE_INFINITY。

• floatValue() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  floatValue()方法是一種非靜態(tài)方法，僅可通過類對象訪問，如果嘗試使用類名訪問該方法，則會收到錯誤消息。

• floatValue() method does not throw an exception at the time of converting BigDecimal to the float.

  在將BigDecimal轉(zhuǎn)換為float時， floatValue()方法不會引發(fā)異常。

Syntax:

句法：

public float floatValue();

Parameter(s):

參數(shù)：

• It does not accept any parameter.

  它不接受任何參數(shù)。

Return value:

返回值：

The return type of this method is float, it returns the float representation of this BigDecimal.

此方法的返回類型為float ，它返回此BigDecimal的float表示形式。

Example:

例：

// Java program to demonstrate the example // of float floatValue() method of BigDecimalimport java.math.*;public class FloatValueOfBD {public static void main(String args[]) {// Initialize two variables first is// of "double" and second is of "String" typedouble val = 1255468.00;String str = "100";// Initialize two BigDecimal objects BigDecimal b_dec1 = new BigDecimal(val);BigDecimal b_dec2 = new BigDecimal(str);// convert this BigDecimal (b_dec1) into// a float, variable named f_convfloat f_conv = b_dec1.floatValue();System.out.println("b_dec1.floatValue(): " + f_conv);// convert this BigDecimal (b_dec2) into// a float, variable named f_convf_conv = b_dec2.floatValue();System.out.println("b_dec2.floatValue(): " + f_conv);} }

Output

輸出量

b_dec1.floatValue(): 1255468.0 b_dec2.floatValue(): 100.0

翻譯自: https://www.includehelp.com/java/bigdecimal-floatvalue-method-with-example.aspx

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