java double方法

雙類compare()方法 (Double class compare() method)

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

  compare()方法在java.lang包中可用。

• compare() method is used to check equality or inequality of the given two double values or in other words, we can say this method is used to compare two double values.

  compare()方法用于檢查給定兩個雙精度值的相等或不相等，換句話說，可以說此方法用于比較兩個雙精度值。

• compare() method is a static method, it is accessible with the class name too and if we try to access the method with the class object then also, we will not get an error.

  compare()方法是一個靜態方法，它也可以使用類名進行訪問，如果我們嘗試使用類對象訪問該方法，那么也不會出錯。

• compare() method does not throw an exception at the time of comparing double values.

  比較雙精度值時， compare()方法不會引發異常。

Syntax:

句法：

public static int compare(double value1, double value2);

Parameter(s):

參數：

• double value1, double value2 – These parameters represent the double values to be compared.

  double value1，double value2 –這些參數表示要比較的double值。

Return value:

返回值：

The return type of this method is int, it returns an integer value.

此方法的返回類型為int ，它返回一個整數值。

• In the first case, it returns 0 if value1 is mathematically equals to value2.

  在第一種情況下，如果value1在數學上等于value2 ，則它返回0 。

• In the second case, it returns the value < 0 if value1 is mathematically less than value2.

  在第二種情況下，如果value1在數學上小于value2 ，則它返回值<0 。

• In the third case, it returns the value > 0 if value1 is mathematically greater than value2.

  在第三種情況下，如果value1在數學上大于value2 ，則它返回> 0的 值 。

Example:

例：

// Java program to demonstrate the example // of compare(double value1,double value2) // method of Double classpublic class CompareOfDoubleClass {public static void main(String[] args) {// Variables initializationdouble value1 = 18.20;double value2 = 20.20;// It compares two double values and // returns the result in another variable (compare) // of integer typesint compare = Double.compare(value1, value2);// Display resultSystem.out.println("Double.compare(value1,value2): " + compare);System.out.println();if (compare == 0)System.out.println("value1 is equal to value2");else if (compare < 0)System.out.println("value1 is less than value2");elseSystem.out.println("value1 is greater than value2");} }

Output

輸出量

Double.compare(value1,value2): -1value1 is less than value2

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

java double方法

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