| java1 |
| public class User |
| private String name |
| private int age |
| public void save |
| public User find |
| return user |
| return null |
| new User |
| new ArrayList |
| new HashMap |
| static final |
| public static void main |
| private final Repository repository |
| public UserService |
| implements Runnable |
| extends Object |
| throw new Exception |
| try catch finally |
| List of users |
| Map of values |
| Set of ids |
| Stream of elements |
| filter users |
| map values |
| collect results |
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