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Java

04/10/19

Get an OutputStream into a String?

What's the best way to pipe the output from an java.io.OutputStream to a String in Java? Say I have the method: writeToStream(Object o, OutputStream out) Which writes certain data from the object... more

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Java

04/06/19

Any 3D geometry algorithms library in Java?

I need a library, that could perform some geometry operations with objects in 3D, like: - Find min distance between 2 triangles - Intersect two polygons - Intersect to objects and exctract... more

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Java

04/05/19

How do I get a platform-dependent new line character?

How do I get a platform-dependent newline in Java? I can’t use `"\ "` everywhere.

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Java

04/05/19

Java - escape string to prevent SQL injection?

I'm trying to put some anti sql injection in place in java and am finding it very difficult to work with the the "replaceAll" string function. Ultimately I need a function that will convert any... more

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Java

04/05/19

Creating a triangle with for loops?

I don't seem to be able to find the answer to this- I need to draw a simple triangle using for loops. * *** ***** ******* ********* I can make a half triangle, but I don't... more

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Java

04/05/19

What does the Java assert keyword do, and when should it be used?

What are some **real life examples** to understand the key role of assertions?

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Java

04/05/19

java.util.Date vs java.sql.Date?

`java.util.Date` vs `java.sql.Date`: when to use which and why?

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Java

04/05/19

How do I pass in a polynomial function in java?

For a programming project in Calculus we were instructed to code a program that models the Simpson's 1/3 and 3/8 rule. We are supposed to take in a polynomial(i.e. 5x^2+7x+10) but I am struggling... more

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Java

04/04/19

When do you use Java's @Override annotation and why?

What are the best practices for using Java's `@Override` annotation and why? It seems like it would be overkill to mark every single overridden method with the `@Override` annotation. Are there... more

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Java Logic Xor

04/04/19

In Java XOR with three true inputs returns true. Why?

The following code System.out.println("1 0 0: " + (true ^ false ^ false)); System.out.println("1 0 1: " + (true ^ false ^ true)); System.out.println("1 1 0: " + (true ^ true ^ false)); ... more

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Java

04/04/19

3D Sphere OpenGL?

I would like to create a Sphere, actually a globe. But i can't seem to find any helpful information about how to handle the vertices and indices to a sphere, how to set them up. Could any of you... more

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Java

04/04/19

How do I remove repeated elements from ArrayList?

I have an `ArrayList`, and I want to remove repeated strings from it. How can I do this?

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Java

04/03/19

How to determine an object's class?

If class `B` and class `C` extend class `A` and I have an object of type `B` or `C`, how can I determine of which type it is an instance?

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Java

04/03/19

.war vs .ear file?

What is the difference between a .war and .ear file?

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Java

04/03/19

How to convert byte size into human readable format in java?

How to convert byte size into human-readable format in Java? Like 1024 should become "1 Kb" and 1024*1024 should become "1 Mb".I am kind of sick of writing this utility method for each project. Are... more

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Java Career Development Webdriver Interview

03/27/19

Is this a good test for a selenium developer?

My boss has given me the assignment of interviewing one of the new automation engineers. The only task left is the technical one, and I have been thinking about a good test that I could give... more

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Java

03/26/19

The Use of Multiple JFrames: Good or Bad Practice?

I'm developing an application which displays images, and plays sounds from a database. I'm trying to decide whether or not to use a separate JFrame to add images to the database from the GUI. I'm... more

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Java

03/26/19

In Java, how do I check if a string contains a substring (ignoring case)?

I have two strings, str1 and str2. How do I check if str2 is contained within str1, ignoring case?

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Java

03/26/19

Determining the quadrant of a point?

I need to determine the quadrant of point, in a faster way. I am only aware of "determine using the signs" method. I am looking for a good approach, if any. If not any fixes to my code would help.... more

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Java

03/26/19

String concatenation: concat() vs "+" operator?

Assuming String a and b: a += b a = a.concat(b) Under the hood, are they the same thing?

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Java

03/26/19

How can I increment a date by one day in Java?

I'm working with a date in this format: `yyyy-mm-dd`. How can I increment this date by one day?

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Java

03/19/19

Centroid of convex polyhedron?

I have a closed convex polyhedron which is defined by an array of convex polygons (faces) which are defined by arrays of vertices in 3D space. I'm trying to find the centroid of the polyhedron,... more

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Java Career Development Automated Testing Junit

03/19/19

What are good resources for a manual tester to transition to automation?

Nervously looking at job posts, automation and programming is no longer "good-to-have". It is almost a must. I'm a manual tester looking to start working towards automated testing/test automation.... more

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Java

03/19/19

What is difference between CrudRepository and JpaRepository interfaces in Spring Data JPA?

What is the difference between `CrudRepository` and `JpaRepository` interfaces in Spring Data JPA? When I see the examples on the web, I see them there used kind of interchangeably. What is the... more

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Java Web Design Computer Science Computer Engineering

03/18/19

Is Python front end or back end?

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Answers •1

Get an OutputStream into a String?

Any 3D geometry algorithms library in Java?

How do I get a platform-dependent new line character?

Java - escape string to prevent SQL injection?

Creating a triangle with for loops?

What does the Java assert keyword do, and when should it be used?

java.util.Date vs java.sql.Date?

How do I pass in a polynomial function in java?

When do you use Java's @Override annotation and why?

In Java XOR with three true inputs returns true. Why?

3D Sphere OpenGL?

How do I remove repeated elements from ArrayList?

How to determine an object's class?

.war vs .ear file?

How to convert byte size into human readable format in java?

Is this a good test for a selenium developer?

The Use of Multiple JFrames: Good or Bad Practice?

In Java, how do I check if a string contains a substring (ignoring case)?

Determining the quadrant of a point?

String concatenation: concat() vs "+" operator?

How can I increment a date by one day in Java?

Centroid of convex polyhedron?

What are good resources for a manual tester to transition to automation?

What is difference between CrudRepository and JpaRepository interfaces in Spring Data JPA?

Is Python front end or back end?

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