【程序7】题目：输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数。
import java.io.*; public class Test7 { public static void main(String[] args) throws Exception { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringBuffer sb = new StringBuffer(br.readLine()); JudgeElement je = new JudgeElement(sb); System.out.println("字母的总数为:" + je.getCharCount()); System.out.println("数字的总数为:" + je.getNumberCount()); System.out.println("空格的总数为:" + je.getSpaceCount()); System.out.println("其它字符的总数为:" + je.getOtherCount()); } } class JudgeElement { StringBuffer sb; int charCount = 0; int spaceCount = 0; int numberCount = 0; int otherCount = 0; public JudgeElement(StringBuffer sb) { this.sb = sb; for(int i=0;i<sb.length();i++) { if((sb.charAt(i)>='a' && sb.charAt(i)<='z') || (sb.charAt(i)>='A'&&sb.charAt(i)<='Z')) { charCount++; } else if(sb.charAt(i)==' ') { spaceCount ++; } else if(sb.charAt(i)>'0'&&sb.charAt(i)<'9') { numberCount++; } else { otherCount++; } } } public int getCharCount() { return charCount; } public int getSpaceCount() { return spaceCount; } public int getNumberCount() { return numberCount; } public int getOtherCount() { return otherCount; } }
