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Generate UML Class Diagram from Java Project [closed]
Is there a good tool that can help to reverse engineer Java classes to UML that will show an overview of how my classes are related to each other? It doesn't need to decompile from JAR file because I have the sources. I know there are quite a few out there but most of those can only generate individ...
Why should I use a pointer rather than the object itself?
I'm coming from a Java background and have started working with objects in C++. But one thing that occurred to me is that people often use pointers to objects rather than the objects themselves, for example this declaration:
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Using Regular Expressions to Extract a Value in Java
...an simply use Pattern p = Pattern.compile("\\d+");
– javaMan
Nov 14 '11 at 1:05
15
Without explan...
How to define custom exception class in Java, the easiest way?
...e the new class dialog in Eclipse you can just set the Superclass field to java.lang.Exception and check "Constructors from superclass" and it will generate the following:
package com.example.exception;
public class MyException extends Exception {
public MyException() {
// TODO Auto-g...
What does the “static” modifier after “import” mean?
...ourself from some typing.
I will elaborate my point with example.
import java.lang.Math;
class WithoutStaticImports {
public static void main(String [] args) {
System.out.println("round " + Math.round(1032.897));
System.out.println("min " + Math.min(60,102));
}
}
Same code, with static i...
Copy a stream to avoid “stream has already been operated upon or closed”
I'd like to duplicate a Java 8 stream so that I can deal with it twice. I can collect as a list and get new streams from that;
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Places where JavaBeans are used?
What is a JavaBean and why do I need it? Since I can create all apps with the class and interface structure? Why do I need beans? And can you give me some examples where beans are essential instead of classes and interfaces?
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Suppress deprecated import warning in Java
In Java, if you import a deprecated class:
6 Answers
6
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Eclipse/Java code completion not working
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Try restoring the default options in 'Windows > Preferences > Java > Editor > Content Assist > Advanced'
An example of the kind of data you see in this preference screen, however not necessarily what you currently have.
(From Vadim in this blog post " Content Assist Duplica...
How to properly compare two Integers in Java?
...
As of Java 1.6.27+ there an overload on equals in the Integer class, so it should be as efficient as calling .intValue(). It compares the values as primitive int.
– otterslide
Sep 22 '16 at 17...