java.lang.StrictMath.toIntExact()是Java中的内置方法,用于返回long参数的值。如果结果溢出一个int,它将引发异常。对象创建不是强制性的,因为toIntExact(long num)是静态的。
用法:
public static int toIntExact(long num)
参数:该方法接受一个long类型的参数num,其返回的是int值。
返回值:该方法以int形式返回参数。
异常:如果参数溢出一个int,则抛出ArithmeticException。
例子:
Input: num = 2727l Output: 2727 Input: num = -86262l Output: -86262
下面的程序演示了java.lang.StrictMath.toIntExact()方法:
示例1:
// Java program to demonstrate working
// of java.lang.StrictMath.toIntExact() method
import java.lang.StrictMath;
class Geeks {
// driver code
public static void main(String args[])
{
// Get the long value
// whose IntExact value is needed
long num = 266526l;
// Get the IntExact value
// using toIntExact() method
int intvalue = StrictMath.toIntExact(num);
// Print the IntExact value
System.out.print("IntExact value of "
+ num + " = " + intvalue);
}
}
输出:
IntExact value of 266526 = 266526
示例2:
// Java program to demonstrate working
// of java.lang.StrictMath.toIntExact() method
import java.lang.StrictMath;
class Geeks {
// driver code
public static void main(String args[])
{
// Get the long value
// whose IntExact value is needed
long num = -7226526l;
// Get the IntExact value
// using toIntExact() method
int intvalue = StrictMath.toIntExact(num);
// Print the IntExact value
System.out.print("IntExact value of "
+ num + " = " + intvalue);
}
}
输出:
IntExact value of -7226526 = -7226526
示例3:演示ArithmeticException
// Java program to demonstrate working
// of java.lang.StrictMath.toIntExact() method
import java.lang.StrictMath;
class Geeks {
// driver code
public static void main(String args[])
{
try {
// Get the long value
// whose IntExact value is needed
long num = 654456645546l;
System.out.println("Trying to get "
+ "IntExact value of: "
+ num);
// Get the IntExact value
// using toIntExact() method
int intvalue = StrictMath.toIntExact(num);
// Print the IntExact value
System.out.print("IntExact value of "
+ num + " = " + intvalue);
}
catch (Exception e) {
System.out.println("Exception throwm: " + e);
}
}
}
输出:
Trying to get IntExact value of: 654456645546 Exception throwm: java.lang.ArithmeticException: integer overflow
相关用法
- Java StrictMath max()用法及代码示例
- Java StrictMath cos()用法及代码示例
- Java StrictMath min()用法及代码示例
- Java StrictMath ulp()用法及代码示例
- Java StrictMath fma()用法及代码示例
- Java Math toIntExact(long value)用法及代码示例
- Java StrictMath expm1()用法及代码示例
- Java StrictMath asin()用法及代码示例
- Java StrictMath multiplyFull()用法及代码示例
- Java StrictMath multiplyHigh()用法及代码示例
- Java StrictMath ceil()用法及代码示例
- Java StrictMath subtractExact()用法及代码示例
- Java StrictMath pow()用法及代码示例
- Java StrictMath log()用法及代码示例
- Java StrictMath tan()用法及代码示例
注:本文由纯净天空筛选整理自ankita_chowrasia大神的英文原创作品 StrictMath toIntExact() Method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。