displaySObjectList.cls

public class displaySObjectList {

    public Map<String, List<String>> stdObj = new Map<String, List<String>>();
    public Map<String, List<String>> cstmObj = new Map<String, List<String>>();


    public Map<String, List<String>> getStdObject(){
        return stdObj;
    }

    public Map<String, List<String>> getCstmObject(){
        return cstmObj;
    }

    public void CreateObjectList(){
        // 全オブジェクトを取得
        Map<String, Schema.SObjectType> gd = Schema.getGlobalDescribe();
        List<String> keys = new List<String>(gd.keyset());
        // 全オブジェクトの内容を取得
        Schema.DescribeSObjectResult[] dsr  = Schema.describeSObjects(keys);
        // プレフィックスが存在するもののみ取得
        List<String> prefixList = new List<String>();
        for(Integer i = 0; i < dsr.size(); i++){
            String tmp = dsr[i].getKeyPrefix();
            if(tmp != null){
                prefixList.add(tmp);
            }
        }
        prefixList.sort();

        for(String s : prefixList){
            for(Integer j = 0; j < dsr.size(); j++){
                if(s == dsr[j].getKeyPrefix()){
                    List<String> objItems = new List<String>();
                    objItems.add(dsr[j].getName());
                    objItems.add(dsr[j].getLabel());
                    if(dsr[j].isCustom()){
                        cstmObj.put(s, objItems);
                    } else {
                        stdObj.put(s, objItems);
                    }
                }
            }
        }
    }
}