strictmath_Java StrictMath abs（）方法与示例

我就是我 2023-03-05 12:59 30阅读 0赞

strictmath

## StrictMath类abs()方法 **(**StrictMath Class abs() method**)** ##

**Syntax:**

**句法：**

public static float abs(float f);
        public static int abs(int i);
        public static long abs(long l);
        public static double abs(double d);

*  **abs() method** is available in java.lang package.
    
    **abs()方法**在java.lang包中可用。
 *  These methods are used to return the absolute value of the given parameter in the method.
    
    这些方法用于返回方法中给定参数的绝对值。
 *  These methods don't throw an exception.
    
    这些方法不会引发异常。
 *  These are static methods, it is accessible with the class name and, if we try to access these methods with the class object then we will not get any error.
    
    这些是静态方法，可以通过类名进行访问，如果尝试使用类对象访问这些方法，则不会出现任何错误。

**Parameter(s):**

**参数：**

*  int / long / float / double – represents the value whose absolute value to be found.
    
    int / long / float / double-表示要找到其绝对值的值。

**Return value:**

**返回值：**

The return type of this method is int / long / float / double – It returns the absolute value of the given value.

此方法的返回类型为int / long / float / double-它返回给定值的绝对值。

**Note:**

**注意：**

*  If we pass a positive value, then the same value is returned.
    
    如果我们传递一个正值，则返回相同的值。
 *  If we pass a negative value, then the same value without sign is returned.
    
    如果我们传递一个负值，则返回不带符号的相同值。
 *  If we pass a zero, then the same value (zero) is returned.
    
    如果传递零，则返回相同的值(零)。
 *  If we pass a NaN, then NaN is returned.
    
    如果我们通过NaN，则返回NaN。

**Example:**

**例：**

// Java program to demonstrate the example 
    // of abs() method of StrictMath class
    
    public class Abs {
        
        public static void main(String[] args) {
        
    
            // variable declarations
            double a = 123.121d;
            double b = -123.121d;
    
            int c = 123121;
            int d = -123121;
    
            long e = 123121l;
            long f = -123121l;
    
            float g = 123.121f;
            float h = -123.121f;
    
            // Display previous value of a,b  
            System.out.println("a: " + a);
            System.out.println("b: " + b);
    
            // Display previous value of c,d
            System.out.println("c: " + c);
            System.out.println("d: " + d);
    
            // Display previous value of e,f 
            System.out.println("e: " + e);
            System.out.println("f:" + f);
    
            // Display previous value of g,h
            System.out.println("g: " + g);
            System.out.println("h: " + h);
    
    
            System.out.println();
            System.out.println("abs(double): ");
    
            // By using abs(double d) method we will calculate the 
            //absolute value of given parameter in the method
    
            System.out.println("StrictMath.abs(a): " + StrictMath.abs(a));
            System.out.println("StrictMath.abs(b): " + StrictMath.abs(b));
    
            System.out.println();
            System.out.println("abs(int): ");
    
            // By using abs(int i) method we will calculate the 
            // absolute value of given parameter in the method
    
            System.out.println("StrictMath.abs(c): " + StrictMath.abs(c));
            System.out.println("StrictMath.abs(d): " + StrictMath.abs(d));
    
            System.out.println();
            System.out.println("abs(long): ");
    
            // By using abs(long l) method we will calculate the 
            // absolute value of given parameter in the method
    
            System.out.println("StrictMath.abs(e): " + StrictMath.abs(e));
            System.out.println("StrictMath.abs(f): " + StrictMath.abs(f));
    
            System.out.println();
            System.out.println("abs(double): ");
    
            // By using abs(double d) method we will calculate the 
            // absolute value of given parameter in the method
    
            System.out.println("StrictMath.abs(g): " + StrictMath.abs(g));
            System.out.println("StrictMath.abs(h): " + StrictMath.abs(h));
        }
    }

**Output**

**输出量**

a: 123.121
    b: -123.121
    c: 123121
    d: -123121
    e: 123121
    f:-123121
    g: 123.121
    h: -123.121
    
    abs(double): 
    StrictMath.abs(a): 123.121
    StrictMath.abs(b): 123.121
    
    abs(int): 
    StrictMath.abs(c): 123121
    StrictMath.abs(d): 123121
    
    abs(long): 
    StrictMath.abs(e): 123121
    StrictMath.abs(f): 123121
    
    abs(double): 
    StrictMath.abs(g): 123.121
    StrictMath.abs(h): 123.121

> 翻译自: [https://www.includehelp.com/java/strictmath-abs-method-with-example.aspx][https_www.includehelp.com_java_strictmath-abs-method-with-example.aspx]

strictmath

[https_www.includehelp.com_java_strictmath-abs-method-with-example.aspx]: https://www.includehelp.com/java/strictmath-abs-method-with-example.aspx