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How to replace a set of tokens in a Java String?
...table method String.format mentioned above is only available starting with Java 1.5 (which should be pretty standard nowadays, but you never know). Instead of that you might also use Java's class MessageFormat for replacing the placeholders.
It supports placeholders in the form '{number}', so your ...
Android java.lang.VerifyError?
...Cat and see what's causing the verifyerror. It's probably some method in a java.lang class that is not supported on the android SDK level you are using (for instance, String.isEmpty()).
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“Conversion to Dalvik format failed with error 1” on external JAR
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Go to Project » Properties » Java Build Path » Libraries and remove all except the "Android X.Y" (in my case Android 1.5). click OK. Go to Project » Clean » Clean projects selected below » select your project and click OK. That should work.
It is al...
Calling remove in foreach loop in Java [duplicate]
In Java, is it legal to call remove on a collection when iterating through the collection using a foreach loop? For instance:
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Conversion from Long to Double in Java
...g to double conversion because long to double is a narrowing conversion in java.
Conversion from type double to type long requires a nontrivial translation from a 64-bit floating-point value to the 64-bit integer representation. Depending on the actual run-time value, information may be lost.
e.g...
What's the purpose of META-INF?
In Java, you often see a META-INF folder containing some meta files. What is the purpose of this folder and what can I put there?
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What is the main difference between Inheritance and Polymorphism?
...dule open book exam today and found myself lost. I was reading Head first Java and both definitions seemed to be exactly the same. I was just wondering what the MAIN difference was for my own piece of mind. I know there are a number of similar questions to this but, none I have seen which provide a...
Preferred Java way to ping an HTTP URL for availability
...e topic here. The question is: What is the preferred way to ping a URL in java?
6 Answers
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What is “the inverse side of the association” in a bidirectional JPA OneToMany/ManyToOne association
... table that should be used. This way you have a unidirectional relation in Java while still having a foreign key column in the Order table. So in the Object world, the Order doesn't know about Customer while in the database world, the Customer doesn't know about Order.
– Henno ...
Read String line by line
...impler, but the Reader implementation beats the others hands down.
import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
/**
* Test class for splitting a string into lines at linebreaks
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