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How do you get the “object reference” of an object in java when toString() and hashCode() have been
I would like to print the "object reference" of an object in Java for debugging purposes.
I.e. to make sure that the object is the same (or different) depending on the situation.
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How do I instantiate a Queue object in java?
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java.util.Queue is an interface. You can't instantiate interfaces. You need to create an instance of a class implementing that interface. In this case a LinkedList is such a class.
– Mihai Toader
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How do I call some blocking method with a timeout in Java?
Is there a standard nice way to call a blocking method with a timeout in Java? I want to be able to do:
10 Answers
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Checking if a string is empty or null in Java [duplicate]
...tring which consists of spaces or special characters eg " " empty too. See java.lang.Character.isWhitespace API
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Eclipse - java.lang.ClassNotFoundException
...ut folder that maven would use.
For example, your web project's src/main/java should have target/classes under the web project, test classes should have target/test-classes also under the web project and so.
Using this configuration will allow you to execute unit tests in eclipse.
Just one more ...
how to create a Java Date object of midnight today and midnight tomorrow?
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java.util.Calendar
// today
Calendar date = new GregorianCalendar();
// reset hour, minutes, seconds and millis
date.set(Calendar.HOUR_OF_DAY, 0);
date.set(Calendar.MINUTE, 0);
date.set(Calendar.SECOND, 0);
date.set(Cale...
proper hibernate annotation for byte[]
...ersistent property or instance
variable of any of the following
types: Java primitive, types, wrappers
of the primitive types,
java.lang.String,
java.math.BigInteger,
java.math.BigDecimal,
java.util.Date,
java.util.Calendar, java.sql.Date,
java.sql.Time, java.sql.Timestamp,
byte[...
How to remove duplicate white spaces in string using Java?
... white spaces (including tabs, newlines, spaces, etc...) in a string using Java?
9 Answers
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Java: recommended solution for deep cloning/copying an instance
...ring if there is a recommended way of doing deep clone/copy of instance in java.
9 Answers
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How would you implement an LRU cache in Java?
...kedHashMap</code> to do that, but that behavior is documented in the JavaDoc for
* <code>LinkedHashMap</code>.
* </p>
*
* @param eldest
* the <code>Entry</code> in question; this implementation doesn't care what it is, since the...