status:ok [XXX][a=XXX b=XXX c=XXX d=XXX e=0 f=XXX g=XXX h=XXX i=XXX j=XXX
k=XXX l=XXX m=XXX n=[[XXX][XXX]] p=[[XXX][XXX][XXX][XXX][XXX][XXX][XXX]]]
end:end

status:ok [XXX][a=XXX b=XXX  c=XXX d=XXX d2=XXX e=XXX  f=XXX g=XXX h=XXX i=XXX j=XXX
k=XXX l=XXX m=XXX n=[[XXX][XXX]] p=[[XXX][XXX][XXX][XXX][XXX][XXX][XXX]]]
end:end

HashMap<String,Object> myHashMap = new HashMap();
myHashMap.put(a, XXX);
....
myHashMap.put(p,array-of-all-[XXX]);

String s ="status:ok [XXX][a=XXX b=XXX c=XXX d=XXX e=0 f=XXX g=XXX h=XXX i=XXX j=XXX k=XXX l=XXX m=XXX n=[[XXX][XXX]] p=[[XXX][XXX][XXX][XXX][XXX][XXX][XXX]]] end:end".replaceAll("end:end", "");

    String [] ss  = s.split("=");
    HashMap<Character,Object> myHashMap = new HashMap();
    try{
    for(int i=0;i<ss.length;i++){

        myHashMap.put(ss[i].charAt(ss[i].length()-1), ss[i+1].substring(0, ss[i+1].length()-1).trim());

    }

    }catch(Exception e){
        // do nothing
    }
      System.out.println(myHashMap);
    }

String str = "status:ok [XXX][a=XXX b=XXX c=XXX d=XXX e=0 f=XXX g=XXX h=XXX i=XXX j=XXX k=XXX l=XXX m=XXX n=[[XXX][XXX]] p=[[XXX][XXX][XXX][XXX][XXX][XXX][XXX]]] end:end";
String[] splitStrA = str.split(" ");
HashMap<String,String> map = new HashMap() ;
for (String splitStr : splitStrA) {
    String[] splitStr1 = splitStr.split("=");
    if (splitStr1.length == 2) {
        map.put(splitStr1[0], splitStr1[1]);
    }
}
System.out.println(map);