public class IdiomProcessor { public static void main(String[] args) { try { BufferedReader br = new BufferedReader(new FileReader("D:\\yy\\java\\成语接龙\\成语大全\\常量成语.txt")); List<String> idiomList = new ArrayList<>(); Map<Character, List<String>> idiomMap = new HashMap<>(); String line; while ((line = br.readLine()) != null) { String[] fields = line.split("拼音：|释义：|出处：|示例："); if (fields.length == 5) { String idiom = fields[0].trim(); idiomList.add(idiom); char lastChar = idiom.charAt(idiom.length()-1); if (!idiomMap.containsKey(lastChar)) { idiomMap.put(lastChar, new ArrayList<>()); } idiomMap.get(lastChar).add(idiom); } } br.close(); BufferedWriter bw = new BufferedWriter(new FileWriter("D:\\yy\\java\\成语接龙\\成语大全\\全量成语处理后.txt")); br = new BufferedReader(new FileReader("D:\\yy\\java\\成语接龙\\成语大全\\常量成语.txt")); while ((line = br.readLine()) != null) { String[] fields = line.split("拼音：|释义：|出处：|示例："); if(fields.length==5) { String idiom = fields[0]; char lastChar = idiom.charAt(idiom.length() - 1); int count = idiomMap.containsKey(lastChar) ? idiomMap.get(lastChar).size() : 0; bw.write(line + "可接：" + count); bw.newLine(); } } bw.close(); br.close(); } catch (IOException e) { e.printStackTrace(); } } }解读一下代码

import java.io.*; public class BufferedReaderTester { public static void main(String[] args) { String fileName="D://Hello.txt"; String line; try{ BufferedReader in =new BufferedReader(new FileReader(fileName)); line=in.readLine(); while(line!=null) { System.out.println(line); line=in.readLine();// TODO Auto-generated method stub } in.close(); } catch(IOException iox) { System.out.println("Problem reading"+fileName); } } }加入读出数据并显示的代码

public static void main(String[] args) { String fileName = "D://Hello.txt"; String line; List<String> lines = new ArrayList(); try { BufferedReader in = new BufferedReader(new FileReader...

BufferedReader reader = new BufferedReader(fileReader);

public static void main(String[] args) { String fileName = "example.txt"; try (BufferedReader reader = new BufferedReader(new FileReader(fileName))) { String line; while ((line = reader.readLine()...

public static void main (String[] args) throws IOException { BufferedReader br = new BufferedReader (new FileReader ( fileName: "day12-code/sort String result = br.lines () / .flatMap(s -> Arrays.stream(s.split ( regex: ")). .map (Integer: :parseInt) I .sorted () // .map (String: :value0f) collect (Collectors.joining( delimiter: " ")); System.out.printin (result); br.close ();

public static void main (String[] args) throws IOException { BufferedReader br = new BufferedReader (new FileReader ("day12-code/sort")); String result = br.lines () .flatMap(s -> Arrays.stream(s....

import java.io.; import java.util.; public class IdiomProcessor { public static void main(String[] args) { try { BufferedReader br = new BufferedReader(new FileReader("D:\yy\java\成语接龙\成语大全\去重后.txt")); List<String> idiomList = new ArrayList<>(); Map<Character, List<String>> idiomMap = new HashMap<>(); String line; while ((line = br.readLine()) != null) { String[] fields = line.split("拼音：|释义：|出处：|示例："); if (fields.length == 5) { String idiom = fields[0].trim(); idiomList.add(idiom); char lastChar = idiom.charAt(idiom.length()-1); if (!idiomMap.containsKey(lastChar)) { idiomMap.put(lastChar, new ArrayList<>()); } idiomMap.get(lastChar).add(idiom); } } br.close(); BufferedWriter bw = new BufferedWriter(new FileWriter("D:\yy\java\成语接龙\成语大全\全量成语处理后.txt")); br = new BufferedReader(new FileReader("D:\yy\java\成语接龙\成语大全\去重后.txt")); while ((line = br.readLine()) != null) { String[] fields = line.split("拼音：|释义：|出处：|示例："); if(fields.length==5) { String idiom = fields[0].trim(); char lastChar = idiom.charAt(idiom.length() - 1); int count=0; for(String nextIdiom:idiomMap.get(lastChar)) { if(nextIdiom.charAt(0) == lastChar) { count++; } } bw.write(line + "可接：" + count); bw.newLine(); } } bw.close(); br.close(); }catch (IOException e) { e.printStackTrace(); } } }修改这串代码，因为目前count无法正确统计可以接龙的成语数量

public static void main(String[] args) { try { BufferedReader br = new BufferedReader(new FileReader("D:\yy\java\成语接龙\成语大全\去重后.txt")); List<String> idiomList = new ArrayList(); Map, ...

优化这段代码直到可以运行import java.io.BufferedReader;import java.io.FileReader;import java.io.IOException;public class Exp6 { public static void main(String[] args) { try (FileReader reader = new FileReader("filename.txt"); BufferedReader bufferedReader = new BufferedReader(reader)) { String line; while ((line = bufferedReader.readLine()) != null) { System.out.println(line); } } catch (IOException e) { e.printStackTrace(); } }}

public static void main(String[] args) { try (FileReader reader = new FileReader("C:/temp/filename.txt"); BufferedReader bufferedReader = new BufferedReader(reader)) { String line; while ((line =...

public class IdiomProcessor { public static void main(String[] args) { try { FileReader fr = new FileReader("D:\yy\java\成语接龙\成语大全\去重后.txt"); BufferedReader br = new BufferedReader(fr); String line; HashMap<Character, ArrayList<String>> idiomMap = new HashMap<>(); while ((line = br.readLine()) != null) { String[] parts = line.trim().split("拼音："); String idiom = parts[0]; //String info = parts[1]; if(!idiom.isEmpty()) { char tail = idiom.charAt(idiom.length() - 1); if (!idiomMap.containsKey(tail)) { idiomMap.put(tail, new ArrayList<String>()); } idiomMap.get(tail).add(idiom);} } br.close(); fr.close(); ArrayList<String> result = new ArrayList<>(); FileReader fr2 = new FileReader("D:\yy\java\成语接龙\成语大全\去重后.txt"); BufferedReader br2 = new BufferedReader(fr2); while ((line = br2.readLine()) != null) { String[] parts = line.trim().split("拼音："); String idiom = parts[0]; //String info = parts[1]; if(!idiom.isEmpty()) { char tail = idiom.charAt(idiom.length() - 1); int count = idiomMap.get(tail).size() - 1; result.add(line.trim() + "可接：" + count); } } br2.close(); fr2.close(); FileWriter fw = new FileWriter("D:\yy\java\成语接龙\成语大全\全量成语处理后.txt"); BufferedWriter bw = new BufferedWriter(fw); for (String line2 : result) { bw.write(line2); bw.newLine(); } bw.close(); fw.close(); } catch (IOException e) { e.printStackTrace(); } } }请修改这个代码，改变count都相等的情况

public static void main(String[] args) { try { FileReader fr = new FileReader("D:\yy\java\成语接龙\成语大全\去重后.txt"); BufferedReader br = new BufferedReader(fr); String line; HashMap, ...

public static void main(String[] args) { String originData = ""; try { 此处补全代码 } catch (Exception e) { e.printStackTrace(); } }

public static void main(String[] args) { String originData = ""; try { // 读取文件内容 File file = new File("data.txt"); BufferedReader reader = new BufferedReader(new FileReader(file)); String ...

给下列代码加上注释import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; public class Ch8 { public static void main(String[] args) { String inputFile = "D:\\eclipse-workspace\\input.txt"; // 输入文件名 String outputFile = "D:\\eclipse-workspace\\output.txt"; // 输出文件名 try (BufferedReader reader = new BufferedReader(new FileReader(inputFile)); BufferedWriter writer = new BufferedWriter(new FileWriter(outputFile))) { String line; int lineNumber = 0; while ((line = reader.readLine()) != null) { lineNumber++; writer.write(lineNumber + ": " + line); writer.newLine(); // 换行 } } catch (IOException e) { e.printStackTrace(); } } }

public static void main(String[] args) { String inputFile = "D:\\eclipse-workspace\\input.txt"; // 输入文件名 String outputFile = "D:\\eclipse-workspace\\output.txt"; // 输出文件名 try ...

import java.io.*; public class Exp6 { public static void main(String[] args) { try { // 创建一个字符输入流 FileReader reader = new FileReader("filename.txt"); // 创建一个缓冲字符输入流 BufferedReader bufferedReader = new BufferedReader(reader); // 读取文件内容并输出到控制台 String line; while ((line = bufferedReader.readLine()) != null) { System.out.println(line); } // 关闭流 bufferedReader.close(); reader.close(); } catch (IOException e) { e.printStackTrace(); } } }

public static void main(String[] args) { try (FileReader reader = new FileReader("filename.txt"); BufferedReader bufferedReader = new BufferedReader(reader)) { String line; while ((line = ...

public static void main(String[] args) throws IOException { BufferedReader bufferedReader = new BufferedReader(new FileReader("src:\\mysql.properties")); String s = null; while((s = bufferedReader.readLine()) != null) { String[] split = s.split("="); if ("ip".equals(split[0])) { System.out.println(split[0] + "是" + split[1]); } } }

代码中使用了 BufferedReader 和 FileReader 来读取文件内容，并且使用了 split 方法来分离属性名和属性值。但是，文件路径似乎有问题。"src:\mysql.properties" 这样的路径不是一个有效的文件路径。在 Java 中，...

import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; import java.util.LinkedList; public class ReverseFileReader { public static void main(String[] args) throws IOException { String fileName = "example.txt"; LinkedList<String> lines = new LinkedList<>(); try (BufferedReader reader = new BufferedReader(new FileReader(fileName))) { String line = null; while ((line = reader.readLine()) != null) { lines.addFirst(line); if (line.contains("friendList")) { break; } } } // 打印链表中的每一行 for (String line : lines) { System.out.println(line); } } }

2. 使用 BufferedReader 读取文件内容，将每一行内容添加到链表的头部。 3. 如果读取到包含字符串 "friendList" 的行，则停止读取。 4. 遍历链表，按顺序输出每一行的内容，即实现了倒序输出文件内容的功能。该...

import java.io.BufferedReader; import java.io.File; import java.io.FileReader; public class ReadFileLineByLine { public static void main(String[] args) { try { // 创建一个File对象 File file = new File("file.txt"); // 创建一个BufferedReader对象 BufferedReader reader = new BufferedReader(new FileReader(file)); // 逐行读取文件内容 String line; while ((line = reader.readLine()) != null) { // 处理每一行的文本 System.out.println(line); } // 关闭BufferedReader对象 reader.close(); } catch (Exception e) { e.printStackTrace(); } } }

程序使用了Java标准库中的File、BufferedReader和FileReader类。具体实现步骤如下： 1. 创建一个File对象，指定要读取的文件路径。 2. 创建一个BufferedReader对象，将FileReader对象作为参数传入，这样可以逐行...

public class IdiomProcessor { public static void main(String[] args) { // 定义输入文件路径和输出文件路径 String inputFile ="D:\yy\java\成语接龙\成语大全\去重后.txt"; String outputFile = "D:\yy\java\成语接龙\成语大全\全量成语处理后.txt"; try (BufferedReader reader = new BufferedReader(new FileReader(inputFile)); BufferedWriter writer = new BufferedWriter(new FileWriter(outputFile))) { // 定义成语列表和成语末尾字与开头字相同的数量Map List<String> idiomList = new ArrayList<>(); Map<Character, Integer> countMap = new HashMap<>(); // 读取每一行成语信息 String line; while ((line = reader.readLine())!= null) { if (line.trim().isEmpty()) { continue; // 跳过空行 } if (line.contains("拼音：")) { // 处理包含指定内容的行 System.out.println("我动了"); // 将成语与其他信息分割 String[] parts = line.split("拼音："); // 将成语加入成语列表 String idiom = parts[0]; idiomList.add(idiom); // 计算成语末尾字与开头字相同的数量 char lastChar = idiom.charAt(idiom.length() - 1); countMap.put(lastChar, countMap.getOrDefault(lastChar, 0) + 1); // 将原来的信息每一条加上count后输出到另一个文件 String newLine = line + "可接：" + countMap.get(lastChar) + "\n"; writer.write(newLine); } } } catch (IOException e) { e.printStackTrace(); } } }由于代码在用Map统计lastChar时不同成语的末尾字会相同，所以用Map记录时，输出的count有错，如何改正

public static void main(String[] args) { // 定义输入文件路径和输出文件路径 String inputFile = "D:\\yy\\java\\成语接龙\\成语大全\\去重后.txt"; String outputFile = "D:\\yy\\java\\成语接龙\\成语大全\...

import java.io.;import java.util.;public class Main { public static void main(String[] args) { try { BufferedReader br = new BufferedReader(new FileReader("idiom.txt")); List<String> idiomList = new ArrayList<>(); Map<Character, List<String>> idiomMap = new HashMap<>(); String line; while ((line = br.readLine()) != null) { String[] parts = line.split(" "); String idiom = parts[0]; idiomList.add(idiom); char lastChar = idiom.charAt(idiom.length() - 1); if (!idiomMap.containsKey(lastChar)) { idiomMap.put(lastChar, new ArrayList<>()); } idiomMap.get(lastChar).add(idiom); } br.close(); BufferedWriter bw = new BufferedWriter(new FileWriter("idiom_result.txt")); br = new BufferedReader(new FileReader("idiom.txt")); while ((line = br.readLine()) != null) { String[] parts = line.split(" "); String idiom = parts[0]; char lastChar = idiom.charAt(idiom.length() - 1); int count = idiomMap.containsKey(lastChar) ? idiomMap.get(lastChar).size() : 0; bw.write(line + " " + count); bw.newLine(); } bw.close(); br.close(); } catch (IOException e) { e.printStackTrace(); } }}这个代码在统计总末尾时count总是小于本该等于的值，是不是在循环内进行map添加时，受当前已经添加的成语列表限制，未扫描到的无法统计进去，怎么改善这个问题

public static void main(String[] args) { try { BufferedReader br = new BufferedReader(new FileReader("idiom.txt")); List<String> idiomList = new ArrayList(); Map, List<String>> idiomMap = new ...

分析以下代码package s5; import java.io.*; public class Sy5_3 { public static void main(String[] args) { // 读取myfile.txt文件并显示内容 try { FileReader fr = new FileReader("myfile.txt"); BufferedReader br = new BufferedReader(fr); String line; while ((line = br.readLine()) != null) { System.out.println(line); } br.close(); fr.close(); } catch (IOException e) { e.printStackTrace(); } // 将myfile.txt文件的内容写入test.txt文件中 try { FileReader fr = new FileReader("myfile.txt"); BufferedReader br = new BufferedReader(fr); FileWriter fw = new FileWriter("test.txt"); String line; while ((line = br.readLine()) != null) { fw.write(line + "\n"); } fw.close(); br.close(); fr.close(); } catch (IOException e) { e.printStackTrace(); } System.out.println("文件写入完成！"); } }

3. 第五行定义了一个名为Sy5_3的公共类（public class），这个类包含了一个名为main的静态方法（public static void main(String[] args)）。 4. 在main方法中，首先使用FileReader对象和BufferedReader对象读取...

package srsc; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.util.Scanner; public class Srsc { public static void main(String[] args) throws IOException { // TODO Auto-generated method stub String filePath = "D:\\test.txt"; BufferedWriter bw = new BufferedWriter(new FileWriter(filePath)); Scanner scanner = new Scanner(System.in); String name = scanner.next(); String gender = scanner.next(); int age = scanner.nextInt(); Student stu = new Student(name, gender, age); bw.write(stu.toString()); bw.newLine(); BufferedReader br = new BufferedReader(new FileReader(filePath)); String rline; while((rline = br.readLine()) != null) { System.out.println(rline); } bw.close(); br.close(); scanner.close(); } }为什么没有输出到控制台

这是因为在程序中没有使用 System.out.println() 或 ...while((rline = br.readLine()) != null) { System.out.println(rline); // 将每一行的文本输出到控制台 } 这样就可以将文件中的信息输出到控制台了。

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public static void main(String[] args) { try{

BufferedReader reader = new BufferedReader(fileReader);

public static void main(String[] args) { String originData = ""; try { 此处补全代码 } catch (Exception e) { e.printStackTrace(); } }

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