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How do I create a file and write to it in Java?
What's the simplest way to create and write to a (text) file in Java?
33 Answers
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Switch on Enum in Java [duplicate]
Why can't you switch on an enum in Java? It seems simple enough to do and would make for some convenient code. Also this question could apply to String 's. You can switch on a char , but not a String ...?
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Hidden Features of Java
...Hidden Features of C# I wondered, What are some of the hidden features of Java?
100 Answers
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How to make a Java thread wait for another thread's output?
I'm making a Java application with an application-logic-thread and a database-access-thread.
Both of them persist for the entire lifetime of the application and both need to be running at the same time (one talks to the server, one talks to the user; when the app is fully started, I need both of t...
Function Pointers in Java
...he idea of function pointers from C++. Is there a similar functionality in Java? Given that pointers are somewhat absent, what is the best way about this? And to be clear, we're talking first class here.
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App Inventor 2 扩展开发实战：从Java小白到发布第一个.aix自定义插件 - Ap...
App Inventor 2 扩展开发实战：从Java小白到发布第一个.aix自定义插件
刚接触App Inventor 2时，大部分人会被它现成的组件库"惯坏"——想听歌有Player、想拍照有Camera、想存数据有TinyDB。但做着做着就发现，有些需求官方组件...
Which is the best library for XML parsing in java [closed]
I'm searching the java library for parsing XML (complex configuration and data files), I googled a bit but couldn't found other than dom4j (Seems like they are working on V2).. I have taken look at commons configuration but didn't like it, Other apache projects on XML seems under hibernation. I have...
Should I use Java's String.format() if performance is important?
...d + comes ahead of format. by a factor of 5 to 6.
Try it your self
import java.io.*;
import java.util.Date;
public class StringTest{
public static void main( String[] args ){
int i = 0;
long prev_time = System.currentTimeMillis();
long time;
for( i = 0; i< 100000; i++){
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Java Keytool error after importing certificate , “keytool error: java.io.FileNotFoundException & Acc
I'm trying to connect a Java Web API via HTTPS; however, an exception is thrown:
11 Answers
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Run a Java Application as a Service on Linux
I have written a Java server application that runs on a standard virtual hosted Linux solution. The application runs all the time listening for socket connections and creating new handlers for them. It is a server side implementation to a client-server application.
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