java-StringBuilder和String的相互转换

/**
 * Author: 明明就会被淘汰
 * Date: 2022/1/22 下午4:39
 * Title: java-StringBuilder和String的转换
 */
public class StringTest4 {
    public static void main(String[] args) {
        //1.将StringBuilder转化成String
        //2.用toString
        //例子：
        StringBuilder sb = new StringBuilder();
        //添加数据：张三
        sb.append("张三");

        //将sb(StringBuilder)转化成String
        String s = sb.toString();
        System.out.println("我现在是String"+s);

        //3.将String转换成StringBuilder
        String test = "我是String类型的";

        StringBuilder sb2 = new StringBuilder(test);

        System.out.println("我现在是StringBuilder" + sb2);

    }
}