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java 通过String关键词 和 String对象创建字符串 耗时对比

发布时间 2023-05-25 10:19:47作者: 盘思动
import java.util.ArrayList;
import java.util.Vector;

public class ImoocStudent {

    public static void main(String args[]){
        long startTime = System.currentTimeMillis();
        for(int i = 0;i < 5000000;i++){
            String s1 = "hello";
            String s2 = "hello";
        }
        long endTime = System.currentTimeMillis();
        System.out.println("通过String关键词创建字符串：" + (endTime - startTime) + "ms");


        long startTime1 = System.currentTimeMillis();
        for(int i = 0;i < 5000000;i++){
            String s3 = new String("hello");
            String s4 = new String("hello");
        }
        long endTime1 = System.currentTimeMillis();
        System.out.println("通过 String 对象创建字符串：" + (endTime1 - startTime1) + "ms");
    }

}