怎么用java编写统计文件中的字符数、单词数和行数？

Question

如题所述

Answer 1

在C盘新建文件1.txt，输入任意字符，如下图：



编写java代码。如下：

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.TreeMap;

public class Test {
// 统计数字或者字符出现的次数
public static TreeMap<Character, Integer> Pross(String str) {
char[] charArray = str.toCharArray();

TreeMap<Character, Integer> tm = new TreeMap<Character, Integer>();

for (int x = 0; x < charArray.length; x++) {
if (!tm.containsKey(charArray[x])) {
tm.put(charArray[x], 1);
} else {
int count = tm.get(charArray[x]) + 1;
tm.put(charArray[x], count);
}
}
return tm;
}

public static void main(String[] args) {
BufferedReader br = null;
int line = 0;
String str = "";
StringBuffer sb  = new StringBuffer();
try {
br = new BufferedReader(new FileReader("c:\\1.txt"));
while ((str = br.readLine()) != null) {
sb.append(str);
++line;
}
System.out.println("\n文件行数: " + line);
System.out.println("\n文件内容: " + sb.toString());
TreeMap<Character, Integer> tm = Pross(sb.toString());
System.out.println("\n字符统计结果为：" + tm);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (br != null) {
try {
br.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
运行结果如下图：

Answer 2

public class Test {

public static void main(String[] args) throws Exception{
Scanner input=new Scanner(System.in);
System.out.println("请输入路径");
String path=input.next();
int charNum= 0 ;
int wordsNum= 0;
int lineNum = 0;
InputStreamReader isr = new InputStreamReader(new FileInputStream(path));
BufferedReader br = new BufferedReader(isr);
while( br.read()()!= -1){
String s = br.readLine();
charNum+=s.length();
wordsNum +=s.split(" ").length;
lineNum ++;
}
isr.close();//关闭
System.out.println("字符数:"+charNum+"\t单词数:"+wordsNum+"行 数:"+lineNum);

}
}本回答被网友采纳

Answer 3

public class Test {

public static void main(String[] args) throws Exception{
Scanner input=new Scanner(System.in);
System.out.println("请输入路径");
String path=input.next();
int charNum= 0 ;
int wordsNum= 0;
int lineNum = 0;
InputStreamReader isr = new InputStreamReader(new FileInputStream(path));
BufferedReader br = new BufferedReader(isr);
while( br.read()!= -1){
String s = br.readLine();
charNum+=s.length();
wordsNum +=s.split(" ").length;
lineNum ++;
}
isr.close();//关闭
System.out.println("字符数:"+charNum+"\t单词数:"+wordsNum+"行 数:"+lineNum);

}
}

Answer 4

int charnumber = 0 ;
int words = 0;
int linenumber = 0;
String path="c:/文件名";

InputStreamReader isr = new InputStreamReader(new FileInputStream(path));
BufferedReader br = new BufferedReader(isr);
while((c = br.read()) != -1){
String s = br.readLine();
charnumber+=s.length();
words +=s.split(' ').length;
linenumber ++;
}
isr.close();
System.out.println("字符数:"+charnumber);
System.out.println("单词数:"+words);
System.out.println("行 数:"+linenumber);