字符串类之间转化 StringBuffer类-->String类 String类-->StringBuffer类

package cm.com.show;
/* 字符串类之间转化
 * StringBuffer类-->String类
 * String类-->StringBuffer类
 */
public class StringBufferTest {


public static void main(String[] args) {
StringBuffer buf=new StringBuffer();
buf.append("hello").append(" world!");
System.out.println("StringBuffer类:"+buf);
String str=new String(buf);
System.out.println("StringBuffer类-->String类:"+str);
String str1=buf.toString();
System.out.println("StringBuffer类-->String类:"+str1);
String info="javascipt";
System.out.println("String类:"+info);
StringBuffer sb=new StringBuffer();
sb.append(info);
System.out.println("String类-->StringBuffer类:"+info);
StringBuffer sb2=new StringBuffer(info);
System.out.println("String类-->StringBuffer类:"+info);
}


}