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What does java:comp/env/ do?
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Quoting https://web.archive.org/web/20140227201242/http://v1.dione.zcu.cz/java/docs/jndi-1.2/tutorial/beyond/misc/policy.html
At the root context of the namespace
is a binding with the name "comp",
which is bound to a subtree reserved
for component-related bindings. The
name "comp" is s...
Weird “[]” after Java method signature
I looked at some Java code today, and I found some weird syntax:
4 Answers
4
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Attach IntelliJ IDEA debugger to a running Java process
Is it possible to attach the IntelliJ IDEA debugger to a running Java process? If yes, how?
5 Answers
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C++ equivalent of Java's toString?
... i.e. cout , for an object of a custom class. Is that possible in C++? In Java you could override the toString() method for similar purpose.
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Why in Java 8 split sometimes removes empty strings at start of result array?
Before Java 8 when we split on empty string like
3 Answers
3
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Differences between Exception and Error
I'm trying to learn more about basic Java and the different types of Throwables, can someone let me know the differences between Exceptions and Errors?
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Rounding a double to turn it into an int (java)
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import java.math.*;
public class TestRound11 {
public static void main(String args[]){
double d = 3.1537;
BigDecimal bd = new BigDecimal(d);
bd = bd.setScale(2,BigDecimal.ROUND_HALF_UP);
// output is 3.15
Syste...
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...那一年智能手机开始兴起，印象很深刻，那一年的Android系统还是在1.x到2.x的升级中，那一年的iPhone对我来说还是个遥远的奢侈品。也是在那一年，我开始学习Android开发到后来学习iOS开发，走上了移动开发的道路，也就是在那时...
What does java.lang.Thread.interrupt() do?
Could you explain what java.lang.Thread.interrupt() does when invoked?
9 Answers
9
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How to serialize an object into a string
...u still want to write it down into a String you can encode the bytes using java.util.Base64.
Still you should use CLOB as data type because you don't know how long the serialized data is going to be.
Here is a sample of how to use it.
import java.util.*;
import java.io.*;
/**
* Usage sample s...