[ThreadLocalOOM](https://blog.csdn.net/xlgen157387/article/details/78298840)

[ Java  ThreadLocal ]()

## ThreadLocal

### ThreadLocal

**** JDK`ThreadLocal` **`ThreadLocal``ThreadLocal`**

**`ThreadLocal``ThreadLocal` `get`  `set` **

 

ThreadLocal

### ThreadLocal

 ThreadLocal 

```java
import java.text.SimpleDateFormat;
import java.util.Random;

public class ThreadLocalExample implements Runnable{

     // SimpleDateFormat 
    private static final ThreadLocal formatter = ThreadLocal.withInitial(() -> new SimpleDateFormat("yyyyMMdd HHmm"));

    public static void main(String[] args) throws InterruptedException {
        ThreadLocalExample obj = new ThreadLocalExample();
        for(int i=0 ; i