排序问题

package corejava;

import java.io.BufferedReader;
import java.io.InputStreamReader;

/**
 * （机能概要描述）
 * 
 * <pre>
 *  [变更履历]
 *  09.07.20.NICKLE NET 初版
 * </pre>
 * 
 * @author NICKLE)王
 */
public class TempTest {

	public String inputInteger() throws Exception{
		System.out.println("please input integer");
		BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
		String temp = bf.readLine();
		return temp;
	}

	public void orderTest(String str){

		final int count = str.length();
		
		String[] str1 = new String[count];
		
		String temp = null;
		
		for(int i = 0 ; i< count ; i++){
			str1[i] = str.substring(i,i+1);
		}
		
		for(int i = 0 ; i < count ; i++){
			for(int j = i ; j< count ;j++){
				if(str1[i].compareTo(str1[j]) > 0 ){
					temp = str1[j];
					str1[j] = str1[i];
					str1[i]= temp;
				}
			}
		}
		for(String str2:str1){
			System.out.print(str2 + " ");
		}
	}

	public static void main(String[] args) throws Exception{
		TempTest t = new TempTest();
		String str = t.inputInteger();
		t.orderTest(str);
	}
}