java math round
时间: 2023-08-24 10:06:13 浏览: 41
The `Math.round()` method in Java is used to round a float or double value to the nearest integer.
Syntax:
```java
public static long round(double value)
public static int round(float value)
```
Example:
```java
double num1 = 5.5;
double num2 = 5.2;
double num3 = 5.8;
System.out.println(Math.round(num1)); // Output: 6
System.out.println(Math.round(num2)); // Output: 5
System.out.println(Math.round(num3)); // Output: 6
```
In the above example, we have used the `Math.round()` method to round the double values to the nearest integer. The output shows the rounded values.
相关问题
java Math.round
Java中的Math.round()方法是将浮点型进行“四舍五入”转换为int类型的一个方法(不含小数点.0)。它的使用方式是直接调用Math类的round()方法,并传入需要进行四舍五入的浮点数作为参数。该方法会返回一个整数值,表示四舍五入后的结果。例如,Math.round(10.5)的结果是11,Math.round(10.4)的结果是10。需要注意的是,Math.round()方法的四舍五入方式与保留小数位数的四舍五入方式有所不同。\[2\]\[3\]
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java math.round
The `Math.round()` method in Java rounds a given decimal number to the nearest integer. If the decimal is exactly halfway between two integers, it will round to the nearest even integer.
Syntax:
```
public static long round(double num)
```
Example:
```java
double num1 = 2.6;
double num2 = 2.4;
long rounded1 = Math.round(num1);
long rounded2 = Math.round(num2);
System.out.println(rounded1); // Output: 3
System.out.println(rounded2); // Output: 2
```
In the example above, `num1` is closer to 3 than to 2, so `Math.round(num1)` returns 3. `num2` is closer to 2 than to 3, so `Math.round(num2)` returns 2.