printwriter

Java Jframe get input and write to file [duplicate]

懵懂的女人 提交于 2021-02-05 12:19:24
问题 This question already has answers here : How to append text to an existing file in Java? (31 answers) Closed 3 years ago . I have one project that I want to get input from jframe. I have to input 3 people data in only one time when code was running and write that data into file name person.txt.Those data have Name Nickname Age and when i compile my code, It dosn't work and I just only write one data in person.txt file. Help me please? I can't get those in my project. what should i do ? public

PrintWriter creates file but doesn't write [duplicate]

老子叫甜甜 提交于 2020-12-12 17:46:53
问题 This question already has answers here : PrintWriter writes only partial text (5 answers) Closed 24 days ago . I used the example code on a website somewhere and it looks like this: package gdt.enlightening; import notify.*; import javax.swing.*; import java.io.*; import java.util.logging.Level; import java.util.logging.Logger; public class export { public static void Export(String path) { try { // Package.json File file = new File(path + "/package.json"); FileWriter pw = new FileWriter(file)

PrintWriter creates file but doesn't write [duplicate]

懵懂的女人 提交于 2020-12-12 17:45:43
问题 This question already has answers here : PrintWriter writes only partial text (5 answers) Closed 24 days ago . I used the example code on a website somewhere and it looks like this: package gdt.enlightening; import notify.*; import javax.swing.*; import java.io.*; import java.util.logging.Level; import java.util.logging.Logger; public class export { public static void Export(String path) { try { // Package.json File file = new File(path + "/package.json"); FileWriter pw = new FileWriter(file)

PrintWriter creates file but doesn't write [duplicate]

喜夏-厌秋 提交于 2020-12-12 17:43:28
问题 This question already has answers here : PrintWriter writes only partial text (5 answers) Closed 24 days ago . I used the example code on a website somewhere and it looks like this: package gdt.enlightening; import notify.*; import javax.swing.*; import java.io.*; import java.util.logging.Level; import java.util.logging.Logger; public class export { public static void Export(String path) { try { // Package.json File file = new File(path + "/package.json"); FileWriter pw = new FileWriter(file)

PrintWriter creates file but doesn't write [duplicate]

情到浓时终转凉″ 提交于 2020-12-12 17:43:26
问题 This question already has answers here : PrintWriter writes only partial text (5 answers) Closed 24 days ago . I used the example code on a website somewhere and it looks like this: package gdt.enlightening; import notify.*; import javax.swing.*; import java.io.*; import java.util.logging.Level; import java.util.logging.Logger; public class export { public static void Export(String path) { try { // Package.json File file = new File(path + "/package.json"); FileWriter pw = new FileWriter(file)

System.out.println not working after printWriter on System.out

烈酒焚心 提交于 2020-07-31 05:18:18
问题 I am facing a rather unusual situation. I am using printWriter with System.out to print the bytes from a file onto console, first using a ByteStreamReader and then a CharacterStreamReader . The problem is after the output of ByteStreamReader , subsequent System.out.println statements are not printing anything on console. I tried using flush on System.out.flush() but still not getting output. Code: FileStream fs = new FileStream(); //ByteStreamReader String source = "./test_zh.txt";

Java socket client doesn't detect server messages

不想你离开。 提交于 2020-05-16 22:00:14
问题 I am attempting to run a Java server socket on a remote host which will regularly broadcast messages (determined by external processes) to all connected clients. The server socket is defined as: ServerSocket serverSocket = (ServerSocket) ((ServerSocketFactory)ServerSocketFactory.getDefault()).createServerSocket(3050); while (true) { Socket socket = serverSocket.accept(); remoteService.addSocket(socket); } Which will keep track of the socket connections in an array list. The method below will

javaweb学习总结(七)——HttpServletResponse对象(一)(转)

吃可爱长大的小学妹 提交于 2020-03-17 05:57:01
javaweb学习总结(七)——HttpServletResponse对象(一)(转) (每天都会更新至少一篇以上,有兴趣的可以关注)转载自 孤傲苍狼 Web服务器收到客户端的http请求,会针对每一次请求,分别创建一个用于代表请求的request对象、和代表响应的response对象。 request和response对象即然代表请求和响应,那我们要获取客户机提交过来的数据,只需要找request对象就行了。要向客户机输出数据,只需要找response对象就行了。 一、HttpServletResponse对象介绍      HttpServletResponse对象代表服务器的响应。这个对象中封装了向客户端发送数据、发送响应头,发送响应状态码的方法。查看HttpServletResponse的API,可以看到这些相关的方法。 1.1、负责向客户端(浏览器)发送数据的相关方法    1.2、负责向客户端(浏览器)发送响应头的相关方法       1.3、负责向客户端(浏览器)发送响应状态码的相关方法    1.4、响应状态码的常量   HttpServletResponse定义了很多状态码的常量(具体可以查看Servlet的API),当需要向客户端发送响应状态码时,可以使用这些常量,避免了直接写数字,常见的状态码对应的常量:   状态码404对应的常量     

HttpServletResponse对象介绍

可紊 提交于 2020-03-17 05:31:36
一、HttpServletResponse对象介绍      HttpServletResponse对象代表服务器的响应。这个对象中封装了向客户端发送数据、发送响应头,发送响应状态码的方法。查看HttpServletResponse的API,可以看到这些相关的方法。 1.1、负责向客户端(浏览器)发送数据的相关方法    1.2、负责向客户端(浏览器)发送响应头的相关方法       1.3、负责向客户端(浏览器)发送响应状态码的相关方法    1.4、响应状态码的常量   HttpServletResponse定义了很多状态码的常量(具体可以查看Servlet的API),当需要向客户端发送响应状态码时,可以使用这些常量,避免了直接写数字,常见的状态码对应的常量:   状态码404对应的常量      状态码200对应的常量      状态码500对应的常量    二、HttpServletResponse对象常见应用 2.1、使用OutputStream流向客户端浏览器输出中文数据 使用OutputStream流输出中文注意问题:   在服务器端,数据是以哪个码表输出的,那么就要控制客户端浏览器以相应的码表打开,比如:outputStream.write("中国".getBytes("UTF-8"));使用OutputStream流向客户端浏览器输出中文,以UTF

JavaWeb---总结(七)HttpServletResponse对象(一)

给你一囗甜甜゛ 提交于 2020-03-17 05:30:04
Web服务器收到客户端的http请求,会针对每一次请求,分别创建一个用于代表请求的request对象、和代表响应的response对象。 request和response对象即然代表请求和响应,那我们要获取客户机提交过来的数据,只需要找request对象就行了。要向客户机输出数据,只需要找response对象就行了。 一、HttpServletResponse对象介绍      HttpServletResponse对象代表服务器的响应。这个对象中封装了向客户端发送数据、发送响应头,发送响应状态码的方法。查看HttpServletResponse的API,可以看到这些相关的方法。 1.1、负责向客户端(浏览器)发送数据的相关方法    1.2、负责向客户端(浏览器)发送响应头的相关方法       1.3、负责向客户端(浏览器)发送响应状态码的相关方法    1.4、响应状态码的常量   HttpServletResponse定义了很多状态码的常量(具体可以查看Servlet的API),当需要向客户端发送响应状态码时,可以使用这些常量,避免了直接写数字,常见的状态码对应的常量:   状态码404对应的常量      状态码200对应的常量      状态码500对应的常量    二、HttpServletResponse对象常见应用 2.1