Java w PDA

[Anonimowy]

#152377 Odpowiedz |

Jak w PDA sprawdzić szybkość łacza HSDPA w Pocket PC? Niestety testowanie prędkości łącza przez znane serwisy pozwala sprawdzić szybkość łącza internetowego w komputerach. Testery nie działają w pocketach, przynajmniej na razie nie udało mi się przetestować na moim HTC szybkości HSDPA w Częstochowie. Ma ktoś na to radę?

[Anonimowy]

#225118 Odpowiedz |

[quote="Red":243097j5]Jak w PDA sprawdzić szybkość łacza HSDPA w Pocket PC? Niestety testowanie prędkości łącza przez znane serwisy pozwala sprawdzić szybkość łącza internetowego w komputerach. Testery nie działają w pocketach, przynajmniej na razie nie udało mi się przetestować na moim HTC szybkości HSDPA w Częstochowie. Ma ktoś na to radę?[/quote:243097j5]

A nie da się łopatologicznie? – wrzucić na serwer plik 1 MB i pobrać go na PDA mierząc czas ? Warunek – serwer musi mieć szybkie łacze – szybsze niż HSDPA w telefonie bo na wolnym serwerze wyniki mogą być zafałszowane.

A tak na marginesie to słyszałem na jakiejś konferencji o komórkach, ze stacje bazowe mają łącza 2 MBit/s, więc HSDPA 7.2 Mbit to fikcja. te 2 Mbit muszą być w dodatku dzielone między userów.

[Anonimowy]

#225119 Odpowiedz |

zna ktoś dobrego midleta na windows mobile dzięki któremu będe mógł sfobodnie korzystać z aplikacji java korzystających z neta? Chodzi o to żeby nie było co chwila Net Use Request. Zezwolenie na używanie neta na całą sesje

[Anonimowy]

#1912592 Odpowiedz |

thanks for sharing

[Anonimowy]

#1915110 Odpowiedz |

„Java in PDA” typically refers to using the Java programming language on Personal Digital Assistants (PDAs). PDAs were handheld devices that provided functionality such as personal information management and basic computing tasks. In the context of Java, there are a couple of key aspects to consider:

Java Platform for PDAs
Java 2 Micro Edition (J2ME):

J2ME was specifically designed for mobile devices and PDAs. It provided a framework for developing applications on devices with limited resources.
J2ME applications are structured using the Mobile Information Device Profile (MIDP) and the Connected Limited Device Configuration (CLDC).
MIDP and CLDC:

MIDP: Offers a set of APIs for building applications on mobile and embedded devices, focusing on user interface and application lifecycle management.
CLDC: Provides a set of basic Java libraries for devices with limited memory and processing power.
Development Considerations
User Interface: Due to the small screen size of PDAs, UI design was crucial. Developers had to ensure that applications were user-friendly and efficient.
Limited Resources: Memory and processing power constraints required optimizations in code and resource management.
Networking: Many applications utilized networking capabilities for synchronization or data exchange, often relying on low-bandwidth connections.
Example Applications
Java on PDAs was used to develop various applications, including:

Personal Information Managers (PIM): Calendar, contacts, and task management tools.
Games: Simple games tailored to the capabilities of the device.
Utilities: Applications for note-taking, calculators, and more.
Legacy
While PDAs have largely been supplanted by smartphones and tablets, the concepts from J2ME and mobile development laid the groundwork for modern mobile app development frameworks. Today, many of these principles are evident in Android development, which also uses Java.

If you have specific questions or need details on a particular aspect of Java and PDAs, feel free to ask!

[AE888]

#1919358 Odpowiedz |

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[itsnoor]

#1947572 Odpowiedz |

snowdaycalculator is a helpful tool that makes it easy to estimate snowfall or track snow accumulation.

[help in morse]

#1952000 Odpowiedz |

The technical discussions regarding HSDPA speeds and Java midlets on legacy Windows Mobile devices highlight a classic era of mobile networking where manual testing was often the only reliable method. Since early mobile browsers struggled with heavy Flash-based speed tests, downloading a fixed-size file while timing the transfer remains a mathematically sound way to calculate real-world throughput, especially when accounting for shared base station bandwidth.

Mobile Networking in the PDA Era
HSDPA Constraints: While HSDPA theoretically supports high speeds, actual performance in cities like Częstochowa was historically limited by the backhaul capacity of the cellular tower and the number of active users sharing the same sector.

Java Permission Requests: On Windows Mobile, Java applications (midlets) often triggered repetitive security prompts. To bypass this, users typically had to „Sign” the midlet with a trusted certificate or modify the internal Java Manager policy to allow „Session-wide” internet access.

Connection Monitoring: Advanced users of that era often used specialized „Today Screen” plugins that provided real-time bit-rate monitoring directly on the Pocket PC interface.

The precise, rhythmic nature of data transmission—where every bit must be perfectly synchronized to maintain a connection—is fundamentally similar to the structure of Morse code numbers. In Morse code, each digit from 0 to 9 is defined by a rigorous five-part sequence of dots and dashes, ensuring that even over a low-bandwidth „legacy” signal, the numerical data remains perfectly intact.

[ricepuritytest]

#1954418 Odpowiedz |

I recently came across this topic and found it surprisingly insightful. It is not just a random quiz but something that makes you reflect on your experiences in a light and honest way. In the middle of exploring different quizzes online, I tried the rice purity test and realized how it blends curiosity with self-awareness. It is simple, engaging, and honestly a bit fun to compare scores with friends while learning more about yourself.

[erona]

#1957845 Odpowiedz |

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[Buie John S]

#1919356 Odpowiedz |

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[Autor]

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