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jvx:common:util:classes [2018/02/08 06:55] admin |
jvx:common:util:classes [2020/06/15 14:43] cduncan [Reflective] |
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| More Details about [[jvx:common:util:xml|XML Handling]]. | More Details about [[jvx:common:util:xml|XML Handling]]. | ||
| - | ==== Working with Arrays ==== | + | ==== Working With Arrays ==== |
| Array operations are always tedious coding work, and every developer could easily do without it. Removing a single element from an array is not rocket science, but there is no standard function available for this task. And who would not like to search an array for an element without coding a loop? | Array operations are always tedious coding work, and every developer could easily do without it. Removing a single element from an array is not rocket science, but there is no standard function available for this task. And who would not like to search an array for an element without coding a loop? | ||
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| From time to time objects have to be cached and exchanged between various instances. Parameters and public methods are very useful for this purpose, but we do not always want to pass an object on across countless instances to the target. Also, the required objects are not always located in the same scope. | From time to time objects have to be cached and exchanged between various instances. Parameters and public methods are very useful for this purpose, but we do not always want to pass an object on across countless instances to the target. Also, the required objects are not always located in the same scope. | ||
| - | This is what the ObjectCacheis for, which handles objects statically, for certain time periods or permanently, within a VM. | + | This is what the ObjectCache is for, which handles objects statically, for certain time periods or permanently, within a VM. |
| This can be compared to a static hash table, complement by a timeout. | This can be compared to a static hash table, complement by a timeout. | ||
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| ==== Ordered Hashtable ==== | ==== Ordered Hashtable ==== | ||
| - | The Standard Hashtable manages its keys in an undefined order. Sometimes it can be useful to keep the order in which the data was added. | + | The standard hashtable manages its keys in an undefined order. Sometimes it can be useful to keep the order in which the data was added. |
| This is handled by the OrderedHashtable. | This is handled by the OrderedHashtable. | ||
| - | ==== Hashtable with automatic List Management ==== | + | ==== Hashtable With Automatic List Management ==== |
| - | The Standard Hashtable manages exactly one value per key. However, often more than one value per key has to be stored. In this case a list has to be used as a value, in which a number of individual values are saved. This is not particularly difficult, but a tedious and boring task. | + | The standard hashtable manages exactly one value per key. However, often more than one value per key has to be stored. In this case, a list has to be used as a value, in which a number of individual values are saved. This is not particularly difficult but a tedious and boring task. |
| The KeyValueList handles the administration of lists and leaves the developer time for more important tasks. | The KeyValueList handles the administration of lists and leaves the developer time for more important tasks. | ||
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| ==== Reflective === | ==== Reflective === | ||
| - | The Reflective class allows you to create class instances or call methods via reflection but without directly using ''java.lang.reflect''. | + | The reflective class allows you to create class instances or call methods via reflection but without directly using ''java.lang.reflect''. |
| More details, see [[jvx:common:util:reflective|here]]. | More details, see [[jvx:common:util:reflective|here]]. | ||
| - | ==== Other classes ==== | + | ==== More classes ==== |
| There are many other interesting utility classes, such as StringUtil, BeanUtil, DateUtil, FileUtil, ImageUtil, ... | There are many other interesting utility classes, such as StringUtil, BeanUtil, DateUtil, FileUtil, ImageUtil, ... | ||
| Additional information can be found in [[https://www.sibvisions.com/files/jvx/current/api/|javadoc]]. | Additional information can be found in [[https://www.sibvisions.com/files/jvx/current/api/|javadoc]]. | ||