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Using Java to find substring of a bigger string using Regular Expression
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This is a working example :
RegexpExample.java
package org.regexp.replace;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegexpExample
{
public static void main(String[] args)
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How can I read a large text file line by line using Java?
I need to read a large text file of around 5-6 GB line by line using Java.
21 Answers
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Good examples using java.util.logging [closed]
I want to use logs in my program. I heard about java.util.logging , but I don't know how to begin.
6 Answers
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How to parse/format dates with LocalDateTime? (Java 8)
Java 8 added a new java.time API for working with dates and times ( JSR 310 ).
7 Answers
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Pass a local file in to URL in Java
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For java 7+: Paths.get("path","to","stuff").toUri().toURL()
– Ajax
Nov 19 '15 at 0:32
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Auto code completion on Eclipse
...uto completion to open automatically while typing.
Go to Preferences > Java > Editor > Content Assist and write .abcdefghijklmnopqrstuvwxyz in the Auto activation triggers for Java field.
See this question for more details.
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How to get a list of current open windows/process with Java?
... how do I get the current open windows or process of a local machine using Java?
14 Answers
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Memory address of variables in Java
Please take a look at the picture below.
When we create an object in java with the new keyword, we are getting a memory address from the OS.
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How do you Programmatically Download a Webpage in Java
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Here's some tested code using Java's URL class. I'd recommend do a better job than I do here of handling the exceptions or passing them up the call stack, though.
public static void main(String[] args) {
URL url;
InputStream is = null;
Buffe...
How do I import the javax.servlet API in my Eclipse project?
I want to develop with Servlets in Eclipse, but it says that the package javax.servlet cannot be resolved. How can I add javax.servlet package to my Eclipse project?
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