Java 中的 StrictMath 减法精确()示例

原文:https://www . geesforgeks . org/strict math-减法器-Java-in-examples/

精确减法(int num1,int num2)

减法精确( int num1,int num2 ) 是 java 中 StrictMath 类的一个内置方法,用于得到给定参数 num1num2 的差值。如果结果溢出 int ,则抛出异常。 由于减法精确( int num1,int num2 )是静态的,因此对象创建不是强制性的。 语法:

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:如果结果溢出一个 int 它会抛出算术异常示例:

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 .减法 Exact()方法: 程序 1:

Java 语言(一种计算机语言,尤用于创建网站)

// 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));
    }
}

Output: 

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

减法精确(长 num1,长 num2)

减法精确( 长 num1,长 num2 ) 是 java 中 StrictMath 类的一个内置方法,用于得到给定参数 num1num2 的差值。如果结果溢出长的就会抛出异常。由于减法精确( long num1,long num2 )是静态的,因此对象创建不是强制性的。 语法:

public static long subtractExact(long num1, long num2)

参数:该方法接受两个参数:

  • num1 :第一个长值和
  • num2 :从第一个长值中减去的第二个长值。

返回值:该方法返回给定参数 num1num2差值异常:如果结果溢出一个长的,则抛出算术异常示例:

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 .减法 Exact()方法: 程序 1:

Java 语言(一种计算机语言,尤用于创建网站)

// 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));
    }
}

Output: 

Difference of -76342561 and 949 = -76343510
Difference of -76342561 and 78326616 = -154669177