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What's the difference between == and .equals in Scala?
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Does it also apply when using Java libraries?
– Jus12
Oct 6 '11 at 22:50
20
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String concatenation: concat() vs “+” operator
...ring b) {
a += b;
return a;
}
}
Now disassemble with javap -c (included in the Sun JDK). You should see a listing including:
java.lang.String cat(java.lang.String, java.lang.String);
Code:
0: new #2; //class java/lang/StringBuilder
3: dup
4: invokespecial ...
Creating java date object from year,month,day
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IBM API designers, JavaScript API designers. Other than that, probably nobody. Note that Calendar is now obsoleted by th the Java 8 java.time API, which does the right thing.
– JB Nizet
Sep 27 '17 at 6:55
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How can I “pretty print” a Duration in Java?
Does anyone know of a Java library that can pretty print a number in milliseconds in the same way that C# does?
11 Answers
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Use of “instanceof” in Java [duplicate]
I learned that Java has the instanceof operator. Can you elaborate where it is used and what are its advantages?
4 Answer...
When does Java's Thread.sleep throw InterruptedException?
When does Java's Thread.sleep throw InterruptedException? Is it safe to ignore it? I am not doing any multithreading. I just want to wait for a few seconds before retrying some operation.
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Convert String to Calendar Object in Java
I am new to Java, usually work with PHP.
8 Answers
8
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What is the difference between Class Path and Build Path
...or building your application. It contains all of your source files and all Java libraries that are required to compile the application.
The classpath is used for executing the application. This includes all java classes and libraries that are needed to run the java application. A Classpath is manda...
Java FileReader encoding issue
I tried to use java.io.FileReader to read some text files and convert them into a string, but I found the result is wrongly encoded and not readable at all.
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Why is no one using make for Java?
Just about every Java project that I've seen either uses Maven or Ant. They are fine tools and I think just about any project can use them. But what ever happened to make ? It's used for a variety of non-Java projects and can easily handle Java. Sure you have to download make.exe if you use Win...