Math.abs（）报告错误：找不到符号(Math.abs() reporting error: cannot find symbol)

Math.abs（）报告错误：找不到符号(Math.abs() reporting error: cannot find symbol)

我是新来的Java，我试图找出数学函数是如何工作的。 我无法弄清楚我错过了什么。

这是整个程序：

public class Math { public static void main(String args[]) { double x = Math.abs(4); System.out.println(x); } }

当我尝试编译它时，jGRASP说：“Math.java:5：错误：找不到符号double x = Math.abs（4）;”

I'm new to java and I'm trying to figure out how the Math functions work. I can't figure out what I'm missing.

Here's the entire program:

public class Math { public static void main(String args[]) { double x = Math.abs(4); System.out.println(x); } }

When I try to compile it, jGRASP says, "Math.java:5: error: cannot find symbol double x = Math.abs(4);"

最满意答案

你叫你的类Math ，所以内建的java.lang.Math类不能被解析。 所以Java认为你试图调用你自己的不存在的abs方法。

另外调用你的类，或者用完全限定的类名引用Math.abs ： java.lang.Math.abs(4) 。

You called your class Math, so the built-in java.lang.Math class can't be resolved. So Java thinks you're attempting to call your own abs method that doesn't exist.

Call your class something else, or refer to Math.abs with a fully qualified class name: java.lang.Math.abs(4).