如何用代码实现精准切换指定程序窗口？

import com.sun.jna.Native;
import com.sun.jna.Platform;
import com.sun.jna.Pointer;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.WinDef;

public class WindowSwitcher {

    public interface User32 extends StdCallLibrary {
        User32 INSTANCE = Native.load("user32", User32.class);

        WinDef.HWND FindWindow(String className, String windowTitle);
        boolean IsWindowVisible(WinDef.HWND hWnd);
        boolean ShowWindow(WinDef.HWND hWnd, int nCmdShow);
        boolean SetForegroundWindow(WinDef.HWND hWnd);
        int SW_SHOWNORMAL = 1;
        int SW_SHOWMAXIMIZED = 3;
        int SW_SHOWMINIMIZED = 2;

    }

    public static void main(String[] args) {
        switchToWindow("微信", 0); // 0: Normal, 1: Maximized, 2: Minimized
    }

    public static void switchToWindow(String windowTitle, int windowState) {
        int state = windowState;
        switch (state) {
            case 1:
                state = User32.SW_SHOWMAXIMIZED;
                break;
            case 2:
                state = User32.SW_SHOWMINIMIZED;
                break;
            default:
                state = User32.SW_SHOWNORMAL;
        }

        User32 user32 = User32.INSTANCE;
        WinDef.HWND hWnd = user32.FindWindow(null, windowTitle);
        if (hWnd != null && user32.IsWindowVisible(hWnd)) {
            user32.ShowWindow(hWnd, state);
            user32.SetForegroundWindow(hWnd);
        } else {
            System.out.println("窗口未找到或不可见");
        }
    }
}