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轉換為float值，并且當此BigDecimal量值不在float范圍內時，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轉換為float時， floatValue()方法不會引發異常。

Syntax:

句法：

    public float floatValue();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

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 BigDecimal
import java.math.*;
public class FloatValueOfBD {
public static void main(String args[]) {
// Initialize two variables first is
// of "double" and second is of "String" type
double 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_conv
float f_conv = b_dec1.floatValue();
System.out.println("b_dec1.floatValue(): " + f_conv);
// convert this BigDecimal (b_dec2) into
// a float, variable named f_conv
f_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