StringBuffer String String[]

 

String

 

 

String[]

1:

	      String[] attA={"width","align","type","sort","id"};
	       for(String s:attA){
		   s=s+"---";
	       }
	       for(String s:attA){
		  System.out.println(s);
	       }

 结果：

width
align
type
sort
id

 

 

 

StringBuffer

1:删除最后一个字符:

	StringBuffer sbf=new StringBuffer("china");
	sbf.delete(sbf.length()-1, sbf.length());
	

 2:替换最后一个字符

sbf.replace(sbf.length()-1, sbf.length(), "x");