字符串反转

public class Fanzhuan { 

public static void main(String[] args){ 
String str="xiaoxin"; 
System.out.print("xiaoxin的逆转的字符串:["); 
for(int i=str.length()-1;i>=0;i--){ 
char ch = str.charAt(i); 
System.out.print(ch); 

} 
System.out.print("]"); 

//II用字符串反转的命令 
/*String str="good"; 
StringBuffer sb = new StringBuffer(str); 
System.out.print("逆转后的字符串是：["+sb.reverse()+"]");*/ 


//III 
/*String str="xiaoxin"; 
char s[] = str.toCharArray(); 
System.out.print("逆转的字符串:["); 
for(int i=s.length-1;i >= 0;i--){ 
System.out.print(s[i]); 
} 
System.out.print("]");*/ 

} 
}