Java Static Import: The妙用 of import static to Directly Call Static Members

Java static import is a syntax feature that simplifies the invocation of a class's static members. When a static member of the same class is used frequently, it avoids repeatedly writing the class name prefix, making the code more concise. Static imports can import a single static member via `import static package name.Class name.Static member name;` or all static members via `import static package name.Class name.*;` (the latter is error-prone and not recommended due to potential conflicts). For example, using the PI constant and pow method of the Math class, after static import, you can directly write `PI` and `pow()`, eliminating the need for the `Math.` prefix and resulting in shorter code. Another example is importing the Arrays.sort method, after which you can directly call sorting without the `Arrays.` prefix. However, it should be noted that overuse can reduce readability. Avoid wildcard imports that bring in a large number of members to prevent naming conflicts. It is recommended to only import the necessary static members and clearly specify their source to enhance code clarity. When used reasonably, static imports can improve conciseness, but overuse will have the opposite effect.