一、String转化为StringBuffer类
方法一：使用StringBuffer类的构造方法，public StringBuffer(String str)
public class Person {
public static void main(String[] args) {
String str ="hello world";
StringBuffer buf = new StringBuffer();
buf.append(str);
System.out.println(buf);
}
}
方法二:利用StringBuffer类的append()方法
public class Person {
public static void main(String[] args) {
String str ="hello world";
StringBuffer buf = new StringBuffer(str);
System.out.println(buf);
}
}
二、StringBuffer转化为String
利用StringBuffer类的toString()方法完成
public class Person {
public static void main(String[] args) {
StringBuffer buf=new StringBuffer();
buf.append("hello world");
String str = buf.toString();
System.out.println(str);
}
}
