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Examples of GoF Design Patterns in Java's core libraries
I am learning GoF Java Design Patterns and I want to see some real life examples of them. What are some good examples of these Design Patterns in Java's core libraries?
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What is a Java ClassLoader?
In a few simple sentences, what is a Java ClassLoader, when is it used and why?
7 Answers
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App Inventor 2 解决一个编译报错DX failed - App Inventor 2 中文网 - 清...
...译失败，报错如下：
-----通过查看编译日志：
[java] indicate that it is *not* an inner class.
[java] Uncaught translation error: java.lang.IllegalArgumentException: already added: Lorg/eclipse/paho/client/mqttv3/BufferedMessage;
&nbs...
How does the String class override the + operator?
Why in Java you're able to add Strings with the + operator, when String is a class? In the String.java code I did not find any implementation for this operator. Does this concept violate object orientation?
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Cast Object to Generic Type for returning
...esponding byte code is:
public static <T> T convertInstanceOfObject(java.lang.Object);
Code:
0: aload_0
1: areturn
2: astore_1
3: aconst_null
4: areturn
Exception table:
from to target type
0 1 2 Class java/lang/ClassC...
Best way to convert an ArrayList to a string
...tring);
In fact, a string concatenation is going to be just fine, as the javac compiler will optimize the string concatenation as a series of append operations on a StringBuilder anyway. Here's a part of the disassembly of the bytecode from the for loop from the above program:
61: new #13; //...
Difference between java.lang.RuntimeException and java.lang.Exception
Someone please explain the difference between java.lang.RuntimeException and java.lang.Exception ? How do I decide which one to extend if I create my own exception?
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String, StringBuffer, and StringBuilder
...ing in all cases or there are some specific cases?
– JavaDragon
Jun 17 '16 at 7:57
@bakkal Can I use all the methods o...
What is the difference between canonical name, simple name and class name in Java Class?
In Java, what is the difference between these:
8 Answers
8
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Convert Long into Integer
How to convert a Long value into an Integer value in Java?
14 Answers
14
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