java.text.ChoiceFormat类的previousDouble()方法用于获取双精度值,该双精度值小于传递的双精度值。
用法:
public static final double previousDouble(double d)
参数:此方法接受双精度值d作为参数,并为其返回前一个双精度值。
返回值:此方法返回的double值比传递的double值小。
下面是说明previousDouble()方法的示例:
示例1:
// Java program to demonstrate
// previousDouble() method
import java.text.*;
import java.util.*;
import java.io.*;
public class GFG {
public static void main(String[] argv)
{
// getting double value just
// lesser than the passed value
// using previousDouble() method
double value
= ChoiceFormat.previousDouble(22);
// display the result
System.out.print("Lesser double value: "
+ value);
}
}
输出:
Lesser double value: 21.999999999999996
示例2:
// Java program to demonstrate
// previousDouble() method
import java.text.*;
import java.util.*;
import java.io.*;
public class GFG {
public static void main(String[] argv)
{
// calling getValue() mehtod
getValue(1.23d);
getValue(10d);
getValue(-12d);
getValue(1.2f);
getValue(50);
}
// defining getValue() mehtod
public static void getValue(double doub)
{
// getting double value just
// lesser than the passed value
// using previousDouble() method
double value
= ChoiceFormat.previousDouble(doub);
// display the result
System.out.println("Just lesser than "
+ doub + ": "
+ value);
}
}
输出:
Just lesser than 1.23: 1.2299999999999998 Just lesser than 10.0: 9.999999999999998 Just lesser than -12.0: -12.000000000000002 Just lesser than 1.2000000476837158: 1.2000000476837156 Just lesser than 50.0: 49.99999999999999
参考: https://docs.oracle.com/javase/9/docs/api/java/text/ChoiceFormat.html#previousDouble-double-
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注:本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 ChoiceFormat previousDouble() 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。