📜  Java中的 StrictMath SubtractExact() 示例

📅  最后修改于: 2022-05-13 01:55:25.795000             🧑  作者: Mango

Java中的 StrictMath SubtractExact() 示例

减法(int num1,int num2)

subtractExact( int num1, int num2 )是Java中 StrictMath 类的内置方法,用于获取给定参数num1num2的差异。如果结果溢出int ,则会引发异常。
由于 subtractExact( int num1, int num2 ) 是静态的,所以对象创建不是强制性的。
句法 :

public static int subtractExact(int num1, int num2)

参数:该方法接受两个参数:

  • num1 : 第一个整数值和
  • num2 :从第一个整数值中减去的第二个整数值。

返回值:该方法返回给定参数num1num2差值
异常:如果结果溢出int ,则抛出ArithmeticException
例子:

Input: num1 = 750, num2 = 50
Output: 700

Input: num1 = 361, num2 = 929
Output: -568

下面的程序说明了Java.lang.StrictMath.subtractExact() 方法:
方案一:

java
// Java program to illustrate the
// java.lang.StrictMath.subtractExact()
 
import java.lang.StrictMath;
 
class Geeks {
 
    // driver code
    public static void main(String args[])
    {
 
        // Get the int values
        // for which the difference is required
        int num1 = 76761;
        int num2 = 99;
        int num3 = 786616;
 
        // Get difference between
        // num1 and num2
        System.out.println("Difference of " + num1
                           + " and " + num2 + " = "
                           + StrictMath
                                 .subtractExact(num1, num2));
 
        // Get difference between
        // num1 and num3
        System.out.println("Difference of " + num1
                           + " and " + num3 + " = "
                           + StrictMath
                                 .subtractExact(num1, num3));
    }
}


java
// Java program to illustrate the
// java.lang.StrictMath.subtractExact()
 
import java.lang.StrictMath;
 
class Geeks {
 
    // driver code
    public static void main(String args[])
    {
 
        // Get the long values
        // for which the difference is required
        long num1 = -76342561;
        long num2 = 949;
        long num3 = 78326616;
 
        // Get difference between
        // num1 and num2
        System.out.println("Difference of " + num1
                           + " and " + num2 + " = "
                           + StrictMath
                                 .subtractExact(num1, num2));
 
        // Get difference between
        // num1 and num3
        System.out.println("Difference of " + num1
                           + " and " + num3 + " = "
                           + StrictMath
                                 .subtractExact(num1, num3));
    }
}


输出:
Difference of 76761 and 99 = 76662
Difference of 76761 and 786616 = -709855

减法(long num1,long num2)

subtractExact( long num1, long num2 )是Java中 StrictMath 类的内置方法,用于获取给定参数num1num2的差异。如果结果长时间溢出,则会引发异常。由于 subtractExact( long num1, long num2 ) 是静态的,所以对象创建不是强制性的。
句法 :

public static long subtractExact(long num1, long num2)

参数:该方法接受两个参数:

  • num1 : 第一个 long 值和
  • num2 : 从第一个中减去的第二个 long 值。

返回值:该方法返回给定参数num1num2差值
异常:如果结果溢出long它会抛出ArithmeticException
例子:

Input: num1 = 750, num2 = 50
Output: 700

Input: num1 = 361, num2 = 929
Output: -568

下面的程序说明了Java.lang.StrictMath.subtractExact() 方法:
方案一:

Java

// Java program to illustrate the
// java.lang.StrictMath.subtractExact()
 
import java.lang.StrictMath;
 
class Geeks {
 
    // driver code
    public static void main(String args[])
    {
 
        // Get the long values
        // for which the difference is required
        long num1 = -76342561;
        long num2 = 949;
        long num3 = 78326616;
 
        // Get difference between
        // num1 and num2
        System.out.println("Difference of " + num1
                           + " and " + num2 + " = "
                           + StrictMath
                                 .subtractExact(num1, num2));
 
        // Get difference between
        // num1 and num3
        System.out.println("Difference of " + num1
                           + " and " + num3 + " = "
                           + StrictMath
                                 .subtractExact(num1, num3));
    }
}
输出:
Difference of -76342561 and 949 = -76343510
Difference of -76342561 and 78326616 = -154669177