Monthly Archives: September 2013

Parse JSON in Java

JSON stands for JavaScript Object Notation, and it is based on a subset of JavaScript. As a data-exchange format, it is widely used in web programming. Here we show how to parse JSON data in Java using the org.json library.

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Hastad Dictator Test for Boolean Functions

A function \(f\colon \{0,1\}^n\to \{0,1\}\) is a dictator function if there exists \(i\in [n]\) such that \(f(x) = x_i\). That is, the function is completely determined by its \(i\)-th input. A function \(f\colon \{0,1\}^n\to \{ \pm 1\}\) is a dictator

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Posted in Theory

Read from URL in Java

Read Text Contents from a URL The class represents a URL (Uniform Resource Locator), a pointer to a “resource” on the Internet. For example, the following is a URL: “http” stands for HyperText Transfer Protocol “” is the

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Parameter Passing in Java

Parameters of a method are specified in the method declaration. When we call a method, we must provide values that match with the types of the parameters. In the following example, the sum method accepts two integers and returns their

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Posted in Java