Java 单文本替换并计算替换的个数

1. 对单一文本的字符串进行替换， 从console 输入需要替换的字符串和target字符串， 同时文件也可以自己指定。

2. 输出替换的字符串的个数

package com.basic.io;


import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.Scanner;
import java.util.TreeMap;


public class SingleFileStringReplace {


private static Scanner scanner;
private static String[] words;

private static void stringReplaceProcess(String srcFile, String fromStr,
String toStr) throws IOException {
// TODO Auto-generated method stub
System.out.println("Invoking the replace process...");
File inFile = new File(srcFile);
BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(inFile), "utf-8"));
File outFile = new File(inFile + ".tmp");
PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile),"utf-8")));

String reading;

Integer count = 0;

TreeMap<String, Integer> map = new TreeMap<String, Integer>();

while ((reading = in.readLine()) != null) {
   words = reading.trim().split(" ");
   
   for (int i=0; i<words.length; i++) {
    if (map.containsKey(words[i])){
    //count++;
    Integer tempCount = (Integer)map.get(words[i]);
    map.put(words[i], new Integer(tempCount.intValue() + 1));//the keyword count increase 1
    System.out.println("The tempcount for " + words[i] + " is " + new Integer(tempCount.intValue() + 1));
    } else {
map.put(words[i], 1);
}
   }
out.println(reading.replaceAll(fromStr, toStr));

}
out.close();
in.close();
inFile.delete();
outFile.renameTo(inFile);
count = map.get(fromStr);
System.out.println("The total replacement for " + fromStr + " is " + count);
System.out.println("End of invoking the replace process!!!");
}


public static void main(String[] args) throws IOException {
scanner = new Scanner(System.in);
System.out.print("The source string is ");
String srcStr = scanner.next();
System.out.println();
System.out.print("The target string is ");
String desStr = scanner.next();
System.out.println();

System.out.println("The source file is " );
String source = scanner.next();

File srcFile = new File(source);

if (!srcFile.exists()) {
System.out.println("Source File not exist... Program terminated...");
System.exit(1);
} else {
System.out.println("File " + srcFile.getAbsolutePath() + " exist, program continue...");
}

stringReplaceProcess(source, srcStr, desStr);
}
}

Output:

The source string is test


The target string is part


The source file is 
SpringMVC.txt
File D:\SpringMVC\javabasics\SpringMVC.txt exist, program continue...
Invoking the replace process...
The total replacement for test is 3
End of invoking the replace process!!!