绝对值有时候在java中十分有用，小伙伴们知道绝对值该如何编写吗?它有什么特性？下面就一起来看看吧。
一、绝对值函数
在Java中可以使用Math.abs()方法来方便的进行绝对值计算，例如：Math.abs(1.3-5.6);
自己写的话也是非常的简单的public Integer abs(Integer a){
return a>0?a:-a;
}
绝对值源码：/
* Returns the absolute value of an {@code int} value.
* If the argument is not negative, the argument is returned.
* If the argument is negative, the negation of the argument is returned.
*
*
Note that if the argument is equal to the value of
* {@link Integer#MIN_VALUE}, the most negative representable
* {@code int} value, the result is that same value, which is
* negative.
*
* @param a the argument whose absolute value is to be determined
* @return the absolute value of the argument.
*/
public static int abs(int a)
{
ret
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