Simple example of Java reflection calling static methods

In the past, reflection was used to call instance methods, so how do reflection call static methods? See the following example

 Class<?> threadClazz = Class.forName("java.lang.Math");Method method = threadClazz.getMethod("abs", long.class);System.out.println(method.invoke(null, -10000l));

Just set the first parameter of the invoke method to null!

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