String 转化 为Iint 不用Integer.valueOf()方法

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 intpuString() throws Exception{
		System.out.println("pealse input String");
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String temp = br.readLine();
		return temp;
	}

	public double stringToint(String str){

		char[] c = str.toCharArray();
		
		final int count = c.length;
		
		double j = 0;
		
		for(int i =0 ;i<count ;i++){
			j = j+ Character.digit(c[i],10) * Math.pow(10,Double.valueOf(count-i-1) );
		}

		return j;
	}

	public static void main(String[] args)throws Exception{
		TempTest t = new TempTest();
		String temp = t.intpuString();
		System.out.println((int)t.stringToint(temp));
	}
}