Creating cache for multiple property files run time/dynamically.

Question

Hi,
I have a requirement, where in I need to create cache for each property file present in a folder at server side or in the lib or resources directory. Please help me how I can do this?
Thanks.

Answer 1

ok thank you.
I follwed this method implementation:
static HashMap<String, HashMap<Object, String>> cacheHolder = new HashMap<String, HashMap<Object, String>>();
     static HashMap<Object, String>[] cache = new HashMap[2];
     static Integer fileCount = 0;
     static int incrementSize = 2;
public method1(Map<Object,String>map){
File file = new File((new StringBuilder(
                         "ABC/XYZ/")).append(value)
                         .toString()); // where value is the file name returned from the external method
               int newSize = existingMapLength+incrementSize;
               if (someVal== null) {                    
                    synchronized (fileCount) {
                         int oldSize = cache.length;
                         if(fileCount==cache.length){
                              HashMap[] oldData = new HashMap[oldSize];
                              oldData = cache;                              
                              cache = new HashMap[newSize];
                              LOGGER.info("New Size added:==>"+cache.length);
                              for(int i=0;i<oldSize;i++){                                   
                                   cache[i] = oldData;
                              cache[fileCount] = readExternalPropertiesFile(file); // external method which returns the properties of the file in hashmap
                              cacheHolder.put(value, cache[fileCount]);                    
                              keys = cache[fileCount].keySet();
                         else{                         
                         cache[fileCount] = readPropertiesFile(file);
                         cacheHolder.put(value, cache[fileCount]);                    
                         keys = cache[fileCount].keySet();
                         someVal= cache[fileCount];
fileCount = fileCount + 1;
Please let me know if any improvemnets are possible.