新人笔记-StringBuilder与String的转化

/*
StringBuilder转化为String
public String toString();通过toString()就可以实现

String转化为StringBulider
public StringBuilder(String);通过构造方法实现
 */
public class StringBuliderDemo {
    public static void main(String[] args) {
        //StringBuilder转String
        StringBuilder s=new StringBuilder();
        s.append("hello");
        //String c=s;    这个方法是错误的
        String c=s.toString();
        System.out.println(c);

        //String转化为StringBuilder
        String a="hello";
        //StringBuilder b=a;   错误
        StringBuilder b=new StringBuilder(a);
        System.out.println(b);
    }
}