java中的starts

數學類靜態double nextAfter(雙向啟動，雙向) (Math Class static double nextAfter(double starts , double directions) )

• This method is available in java.lang package.

  此方法在java.lang包中可用。

• This method is used to return the double floating-point number adjacent to the first parameter (starts) in the direction of the second parameter (directions).

  此方法用于在第二個參數(方向)的方向上返回與第一個參數相鄰的雙浮點數(起始)。

• Let suppose both arguments passed in the method are equivalent so in that case the second parameter is returned.

  假設在方法中傳遞的兩個參數都相等，那么在這種情況下將返回第二個參數。

• This is a static method, so it is accessible with the class name too.

  這是一個靜態方法，因此也可以使用類名進行訪問。

• The return type of this method is double, it returns the double floating-point number adjacent to start in the direction of the second argument.

  此方法的返回類型為double ，它返回第二個參數方向上與start相鄰的double浮點數。

• In this method, we pass two parameters of double type so the first parameter represents the initial or starting floating-point value and the second parameter represents the value denoting which of the given first parameter neighbor (Starts neighbor) or start is returned.

  在此方法中，我們傳遞了兩個雙精度類型的參數，因此第一個參數表示初始或起始浮點值，第二個參數表示表示返回給定的第一個參數鄰居(起點鄰居)或起點的值。

• This method does not throw any exception.

  此方法不會引發任何異常。

Syntax:

句法：

    public static double nextAfter(double starts , double directions){
}

Parameter(s):

參數：

• starts – represents the initial or starting floating-point value.

  starts –表示初始或起始浮點值。

• directions – represents the value denoting which of the given first parameter neighbor (starts neighbor).

  directions –代表一個值，該值表示給定的第一個參數鄰居( 起始鄰居)。

Return value:

返回值：

The return type of this method is double, it returns the double floating-point number adjacent to the first parameter (starts) in the direction of second parameter (directions).

這種方法的返回類型是雙 ，它在第二個參數( 方向 )的方向返回鄰近第一參數( 首發 )的雙浮點數。

Note:

注意：

• If we pass "NaN" (Not a Number), it returns the same i.e. "NaN".

  如果我們傳遞“ NaN”(不是數字)，則返回相同的值，即“ NaN”。

• If we pass the same value in both of the parameters, it returns the same value.

  如果我們在兩個參數中傳遞相同的值，它將返回相同的值。

• If we pass "Double.MIN_VALUE" as the first parameter and second parameter holds another value, it returns smaller value i.e. the same value is with the same sign as the first parameter.

  如果我們將“ Double.MIN_VALUE”作為第一個參數傳遞，而第二個參數包含另一個值，則它將返回較小的值，即，與第一個參數相同的值帶有相同的符號。

• If we pass infinity as first parameter and second parameter holds another value, it returns the "Double.MAX_VALUE" with the same sign as the first parameter.

  如果我們將無窮大作為第一個參數傳遞而第二個參數包含另一個值，則它將返回與第一個參數具有相同符號的“ Double.MAX_VALUE”。

• If we pass "Double.MAX_VALUE" as the first parameter and second parameter holds another value, it returns the largest value with the same sign as the first parameter.

  如果我們將“ Double.MAX_VALUE”作為第一個參數傳遞，而第二個參數保留另一個值，則它將返回與第一個參數具有相同符號的最大值。

Java程序演示nextAfter(double starts，雙向)方法的示例 (Java program to demonstrate example of nextAfter(double starts , double directions) method)

// Java program to demonstrate the example of 
// nextAfter(double starts , double directions) method of Math Class.
public class NextAfterDoubleTypeMethod {
public static void main(String[] args) {
// declaring the variables
double d1 = -2.6;
double d2 = 0.0;
double d3 = -0.6;
double d4 = 7.0 / 0.0;
// displaying the values
System.out.println("d1: " + d1);
System.out.println("d2: " + d2);
System.out.println("d3: " + d3);
System.out.println("d4: " + d4);
// Here , we will get (-2.5 (approx.)) because we are passing 
// parameter whose value is (-2.6,0.0)
System.out.println("Math.nextAfter(d1,d2):" + Math.nextAfter(d1, d2));
// Here , we will get (2.6) and we are passing parameter 
// whose value is (0.0,-2.6)
System.out.println("Math.nextAfter(d2,d1):" + Math.nextAfter(d2, d1));
// Here , we will get (Double.MAX_VALUE) and we are passing parameter
// whose value is (7.0/0.0,0.0)
System.out.println("Math.nextAfter(d4,d2):" + Math.nextAfter(d4, d2));
// Here , we will get (largest value) and we are passing parameter 
// whose value is (0.0,7.0/0.0)
System.out.println("Math. nextAfter(d2,d4):" + Math.nextAfter(d2, d4));
}
}

Output

輸出量

E:\Programs>javac NextAfterDoubleTypeMethod.java
E:\Programs>java NextAfterDoubleTypeMethod
d1: -2.6
d2: 0.0
d3: -0.6
d4: Infinity
Math.nextAfter(d1,d2):-2.5999999999999996
Math.nextAfter(d2,d1):-4.9E-324
Math.nextAfter(d4,d2):1.7976931348623157E308
Math. nextAfter(d2,d4):4.9E-324

翻譯自: https://www.includehelp.com/java/math-class-static-double-nextafter-double-starts-double-directions-with-example.aspx

java中的starts