String -- StringBuffer
a:通过构造方法
b:通过append()方法
StringBuffer -- String
a:通过构造方法
b:通过toString()方法
c:通过subString(0,length);
Example:
StringBuffer sb = new StringBuffer("sarah");
String s1 = new String(sb); //通过构造将StringBuffer转换为String
System.out.println(s1);
String s2 = sb.toString(); //通过toString方法将StringBuffer转换为String
System.out.println(s2);
String s3 = sb.substring(0, sb.length()); //通过截取子字符串将StringBuffer转换为String
System.out.println(s3);
StringBuffer sb1 = new StringBuffer("sarah");//通过构造方法将字符串转换为StringBuffer对象
System.out.println(sb1);
StringBuffer sb2 = new StringBuffer();
sb2.append("sarah"); //通过append方法将字符串转换为StringBuffer对象
System.out.println(sb2);