BigDecimal類(lèi)的toBigIntegerExact()方法 (BigDecimal Class toBigIntegerExact() method)

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

  toBigIntegerExact()方法在java.math包中可用。

• toBigIntegerExact() method is used to convert this BigDecimal into the exact BigInteger value and it will throw an exception when this BigDecimal holds some fractional part that is other than 0.

  toBigIntegerExact()方法用于將此BigDecimal轉(zhuǎn)換為確切的BigInteger值，并且當(dāng)此BigDecimal持有非0的小數(shù)部分時(shí)，它將引發(fā)異常。

• toBigIntegerExact() 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.

  toBigIntegerExact()方法是一個(gè)非靜態(tài)方法，只能通過(guò)類(lèi)對(duì)象訪(fǎng)問(wèn)，如果嘗試使用類(lèi)名稱(chēng)訪(fǎng)問(wèn)該方法，則會(huì)收到錯(cuò)誤消息。

• toBigIntegerExact() method may throw an exception at the time of converting this object into BigInteger.

  在將此對(duì)象轉(zhuǎn)換為BigInteger時(shí)， toBigIntegerExact()方法可能會(huì)引發(fā)異常。

  ArithmeticException: This exception may throw when this BigDecimal object holds a decimal part that is other than 0.

  ArithmeticException ：當(dāng)此BigDecimal對(duì)象包含非0的小數(shù)部分時(shí)，可能引發(fā)此異常。

Syntax:

句法：

public BigInteger toBigIntegerExact();

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 BigInteger, it returns the exact conversion of this BigDecimal object value to a BigInteger value.

此方法的返回類(lèi)型為BigInteger ，它將此BigDecimal對(duì)象值精確轉(zhuǎn)換為BigInteger值。

Example:

例：

// Java program to demonstrate the example // of BigInteger toBigIntegerExact() method of BigDecimalimport java.math.*;public class ToBigIntegerExactOfBD {public static void main(String args[]) {// Initialize two variables - double and // String typedouble val = 1234521.0;String str = "1211124";// Initialize two BigDecimal objects BigDecimal b_dec1 = new BigDecimal(val);BigDecimal b_dec2 = new BigDecimal(str);/* In this method it throws an exceptionwhen we pass any non-zero value after decimal in this BigDecimal */// converts this BigDecimal b_dec1 value into// an exact BigInteger value, and store the result// in a variable named b_int_convBigInteger b_int_conv = b_dec1.toBigIntegerExact();System.out.println("b_dec1.toBigIntegerExact(): " + b_int_conv);// converts this BigDecimal b_dec2 value into// an exact BigInteger value, and store the result// in a variable named b_int_convb_int_conv = b_dec2.toBigIntegerExact();System.out.println("b_dec2.toBigIntegerExact(): " + b_int_conv);} }

Output

輸出量

b_dec1.toBigIntegerExact(): 1234521 b_dec2.toBigIntegerExact(): 1211124

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

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