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Java Forum / General / November 200532bit java app on 64bit platform
Would there be any issues in running a java app on a 64bit linux platform that was initially developed on a 32 bit linux system. What are the factors and/or dependencies to consider. Thanks. Satinder >Would there be any issues in running a java app on a 64bit linux >platform that was initially developed on a 32 bit linux system. What >are the factors and/or dependencies to consider. Thanks. In theory, you should not notice any difference other than the ability to have more objects and more RAM. In practice there might be some problems with JNI.  SignatureCanadian Mind Products, Roedy Green. http://mindprod.com Java custom programming, consulting and coaching. > Would there be any issues in running a java app on a 64bit linux > platform that was initially developed on a 32 bit linux system. What > are the factors and/or dependencies to consider. Thanks. To expound on the answer already provided, absolutely none. The size of data types in java is already defined, and won't change based on the platform you're running it on. see http://java.sun.com/docs/books/tutorial/java/nutsandbolts/datatypes.html SignatureOf making better designs there is no end, and much refactoring wearies the body. >> Would there be any issues in running a java app on a 64bit linux >> platform that was initially developed on a 32 bit linux system. What [quoted text clipped - 3 lines] > of data types in java is already defined, and won't change based on > the platform you're running it on. That is partially true only: The java type won't change, true, but the space they take in ram may. The jvm may have a different padding strategy to align it object structure in ram, just like it did for 32 bits platform. When an object (8 bytes) as a boolean (1 byte), it may take more than 9 bytes of ram in reality (maybe 12 on 32 bits, maybe 16 on 64 bits). JVM dependant. > see > http://java.sun.com/docs/books/tutorial/java/nutsandbolts/datatypes.htm > l Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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