为什么 getWindow（） 无法解析？

我无法解析 getWindow（）;由于某种原因的方法...

import java.applet.Applet;

import netscape.javascript.JSObject;

public class Class466 {
public static void method6020(Applet applet, String string, int i)
        throws Throwable {
    try {
        JSObject.getWindow(applet).eval(string);
    } catch (RuntimeException runtimeexception) {
        throw Class346.method4175(runtimeexception, new StringBuilder()
                .append("tf.a(").append(')').toString());
    }
}

public static Object method6021(Applet applet, String string, short i)
        throws Throwable {
    try {
        return JSObject.getWindow(applet).call(string, null);
    } catch (RuntimeException runtimeexception) {
        throw Class346.method4175(runtimeexception, new StringBuilder()
                .append("tf.f(").append(')').toString());
    }
}

public static Object method6022(Applet applet, String string,
        Object[] objects, byte i) throws Throwable {
    try {
        return JSObject.getWindow(applet).call(string, objects);
    } catch (RuntimeException runtimeexception) {
        throw Class346.method4175(runtimeexception, new StringBuilder()
                .append("tf.b(").append(')').toString());
    }
}

Class466() throws Throwable {
    throw new Error();
}
}