在StringBuilder append()语句中进行连接所需的执行时间是否与使用两个append()语句所需的执行时间不同?

我想知道,如果程序员在Stringbuilder append()语句中串联,或者只使用两个append语句而不是一个,执行速度会发生变化。

我问这个问题是为了帮助我弄清楚,当我们可以连接时,为什么要使用StringBuilder类。

连接示例:

public class MCVE {

    public static void main(String[] args) {
        String[] myArray = {"Some", "stuff", "to", "append", "using", "the",
                "StringBuilder", "class's", "append()", "method"};

        StringBuilder stringBuild = new StringBuilder();

        for(String s: myArray) {
            stringBuild.append(s + " ");
        }

    }
}

Double-Append()示例:

public class MCVE {

    public static void main(String[] args) {
        String[] myArray = {"Some", "stuff", "to", "append", "using", "the",
                "StringBuilder", "class's", "append()", "method"};

        StringBuilder stringBuild = new StringBuilder();

        for(String s: myArray) {
            stringBuild.append(s);
            stringBuild.append(" ");
        }

    }
}