ifelsetest.java

一系列java小程序

import java.io.*;
public class IfElseTest{
	public static void main(String[] args)throws IOException
	{
		String str;
		BufferedReader buf;
		int aCount=0,bCount=0,cCount=0,dCount=0,Count=0;
		buf=new BufferedReader(new InputStreamReader(System.in));
		System.out.println("请输入以串字符，回车后统计字符ABCD的个数：");
		str=buf.readLine();
		for(int i=0; i<str.length();i++){
			char ch=str.charAt(i);
			if(ch=='a'|ch=='A')
			 	++aCount;
			else if(ch=='b'|ch=='B')
			 	++bCount;
			else if(ch=='c'|ch=='C')
			 	++cCount;
			else if(ch=='d'|ch=='D')
			 	++dCount;
			else
				Count++;
		}
		System.out.println("字母a或A的个数为："+aCount);
		System.out.println("字母b或B的个数为："+bCount);
		System.out.println("字母c或C的个数为："+cCount);
		System.out.println("字母d或D的个数为："+dCount);
		System.out.println("其它字母的个数为："+Count);
	}
}