isinfinite

雙類isInfinite()方法 (Double class isInfinite() method)

• isInfinite() method is available in java.lang package.

  isInfinite()方法在java.lang包中可用。

• isInfinite() method is used to check infinity (i.e. either positive infinity or negative infinity).

  isInfinite()方法用于檢查無窮大(即正無窮大或負無窮大)。

• isInfinite() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  isInfinite()方法是一種非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• isInfinite() method does not throw an exception at the time of checking infinity.

  isInfinite()方法在檢查無窮大時不會引發異常。

Syntax:

句法：

public boolean isInfinite();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

Return value:

返回值：

The return type of this method is boolean, it returns "true" if this object is either positive or negative infinity, else it returns "false".

此方法的返回類型為boolean ，如果此對象是正無窮大或負無窮大，則返回“ true”，否則返回“ false”。

Example:

例：

// Java program to demonstrate the example // of isInfinite() method of Double classpublic class IsInfiniteOfDoubleClass {public static void main(String[] args) {// Object initializationDouble ob1 = new Double(10.0 / 0.0);Double ob2 = new Double(-20.0 / 0.0);Double ob3 = new Double(20.0);// Display ob1,ob2 and ob3 valuesSystem.out.println("ob1: " + ob1);System.out.println("ob2: " + ob2);System.out.println("ob3: " + ob3);// It checks infinity by calling ob1.isInfinite() for ob1// and ob2.isInfinite() for ob2 and ob2.isInfinite() for ob3 boolean infinite1 = ob1.isInfinite();boolean infinite2 = ob2.isInfinite();boolean infinite3 = ob3.isInfinite();// Display result valuesSystem.out.println("ob1.isInfinite(): " + infinite1);System.out.println("ob2.isInfinite(): " + infinite2);System.out.println("ob3.isInfinite(): " + infinite3);} }

Output

輸出量

ob1: Infinity ob2: -Infinity ob3: 20.0 ob1.isInfinite(): true ob2.isInfinite(): true ob3.isInfinite(): false

翻譯自: https://www.includehelp.com/java/double-class-isinfinite-method-with-example.aspx

isinfinite

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