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); } }