package com.landtool.lanbase.UNUSED; import com.landtool.lanbase.modules.spcData.entity.SpcMetadata; import org.springframework.http.HttpStatus; import java.util.ArrayList; public class Test { public static void main(String[] args) { // HashMap map = new HashMap(); // map.put("test", "put"); // ArrayList arrayList = new ArrayList(); // arrayList.add("test"); ThreadLocal threadLocal = new ThreadLocal<>(); /* ArrayList list = new ArrayList<>(); for(int i=0; i<10000000 ;i++){ list.add("test:"+i); } long statTime = System.currentTimeMillis(); list.stream().forEach(s-> System.out.println(s)); long endTime = System.currentTimeMillis(); System.out.println("耗时为:"+(endTime-statTime)); long statTimeM = System.currentTimeMillis(); list.stream().parallel().forEach(s-> System.out.println(s)); long endTimeM = System.currentTimeMillis(); System.out.println("parallel------耗时为:"+(endTimeM-statTimeM)); */ System.out.println(HttpStatus.OK); } }