textcompareto.java

读取文件中的所有内容并判断相关内容的...。

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


public class textCompareTo {
	public static void main(String[] args)throws IOException {
		// TODO Auto-generated method stubint a1=0,a2=0,a3=0,a4=0;
		int a1=0,a2=0,a3=0,a4=0; int k=0;
		System.out.println("请输入字符:");
		BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
           String input=reader.readLine();
           char[] t=input.toCharArray();
           for(int i=0;i<t.length;i++){
  			 String b=String.valueOf(t[i]);
   			   if(b.compareTo("a")>=0&&b.compareTo("z")<=0)a2++;
  			   else if(b.compareTo("A")>=0&&b.compareTo("Z")<=0)a1++;
  			   else if(b.compareTo("0")>=0&&b.compareTo("9")<=0)a3++;
  			    else a4++;
  		 }
  		System.out.println("该字符串中大写字母有:"+a1+"个");
  		System.out.println("该字符串中小写字母有:"+a2+"个");
  		System.out.println("该字符串中数字有:"+a3+"个");
  		System.out.println("该字符串中其他字符有:"+a4+"个");
	}
}