java - I need to fill the cache(CacheBuilder) as it starts. Is there any random way to do it? -

i have batch program uses cache. cache empty, data arrives compares received data previous received data.
* - if data not found: added data
* - if data found different: update data
* - if data found same: data filtered out

so, after few time, cache size increases data keep on increasing. , there processing taking quite amount of time process.

i need test whole situation, , have few incoming data , need regenerate situation. need fill cache starts. there random way it?

i using cachebuilder cache:

private cache> statescache = .newbuilder() .maximumsize(1000) .build();

i thought, there inbuilt function that. later did using loop:

private static cache> statescache = cachebuilder.newbuilder()// .maximumsize(1000).expireafteraccess(24, timeunit.hours).build();

static {      (int = 0; < 999; i++) {         map<string, state> map = new hashmap<string, state>();         (int j = 0; j < 50; j++) {             state randomstate = new state() {                 string value = null;                 string id = null;                 string data = null;                  @override                 public void setvalue(string value) {                     this.value = value;                  }                  @override                 public void setid(string id) {                     this.id = id;                  }                  @override                 public void setdata(string data) {                     this.data = data;                  }                  @override                 public string getvalue() {                     return value;                 }                  @override                 public string getid() {                     return id;                 }                  @override                 public string getdata() {                     return data;                 }              };              randomstate.setdata("data_" + j);             randomstate.setid("id_" + j);             randomstate.setvalue("value_" + j);             map.put("id_" + j, randomstate);         }         statescache.put("bstn_" + string.format("%04d", i), map);     } }