BigInteger類減去()方法 (BigInteger Class subtract() method)

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

  exclude()方法在java.math包中可用。

• subtract() method is used to subtract the given value from the value of this BigInteger.

  exclude()方法用于從此BigInteger的值中減去給定值。

• subtract() 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.

  tractor()方法是一個非靜態方法，只能通過類對象訪問，如果嘗試使用類名訪問該方法，則會收到錯誤消息。

• subtract() method does not throw an exception at the time of performing subtraction.

  減去()方法在執行減法時不會引發異常。

Syntax:

句法：

    public BigInteger subtract(BigInteger val);

Parameter(s):

參數：

• BigInteger val – represents the value to be subtracted from this BigInteger.

  BigInteger val –表示要從此BigInteger中減去的值。

Return value:

返回值：

The return type of this method is BigInteger, it returns BigInteger that holds the value subtracted the given val from the value of this object.

此方法的返回類型為BigInteger ，它返回BigInteger，其中保存有從該對象的值中減去給定val的值。

Example:

例：

// Java program to demonstrate the example 
// of BigInteger subtract(BigInteger val)
// method of BigInteger
import java.math.*;
public class SubstractOfBI {
public static void main(String args[]) {
// Initialize two variables str1 str2 
String str1 = "1245";
String str2 = "100";
// Initialize two BigInteger objects  
BigInteger b_int1 = new BigInteger(str1);
BigInteger b_int2 = new BigInteger(str2);
// Display b_int1 , b_int2 
System.out.println("b_int1: " + b_int1);
System.out.println("b_int2: " + b_int2);
// subtracts the given BigInteger (b_int2)
// from this BigInteger (b_int1) i.e.
// {b_int1 - b_int2}
BigInteger sub_val = b_int1.subtract(b_int2);
System.out.println("b_int1.subtract(b_int2): " + sub_val);
}
}

Output

輸出量

b_int1: 1245
b_int2: 100
b_int1.subtract(b_int2): 1145

翻譯自: https://www.includehelp.com/java/biginteger-subtract-method-with-example.aspx