Currently I have two classes. a classroom class and a School class. I would like to write a method in the School class to call public void setTeacherName(String newTeacherName) from the classroom class. classroom.java School.java
How do you make Selenium 2.0 wait for the page to load?
Java’s Set and Map interfaces specify two very different collection types. A Set is just what it sounds like: a collection of distinct (non-equal) objects, with no other structure. A Map is, conceptually, also just what it sounds like: a mapping from a set of objects (the distinct keys) to a collection of objects (the values). Hashtable and HashMap both implement Map, HashSet implements Set, and they all use hash codes … Read more
Why can’t you switch on an enum in Java? It seems simple enough to do and would make for some convenient code. Also this question could apply to String‘s. You can switch on a char, but not a String …?
Assumptions: x is the horizontal axis, and increases when moving from left to right. y is the vertical axis, and increases from bottom to top. (touch_x, touch_y) is the point selected by the user. (center_x, center_y) is the point at the center of the screen. theta is measured counter-clockwise from the +x axis. Then: Edit: you mentioned in a comment that y increases from top to bottom. … Read more
The @ symbol denotes a Java Annotation. What a Java annotation does, is that it adds a special attribute to the variable, method, class, interface, or other language elements. (This can be configured when you declare the annotation) When you add an annotation to something, other parts of the program can check whether something has an annotation … Read more
Yeah, it is quite vague. You should use it whenever for readers of the documentation of your method it may be useful to also look at some other method. If the documentation of your methodA says “Works like methodB but …”, then you surely should put a link. An alternative to @see would be the inline {@link …} tag: … Read more
While running junit test in eclipse I am getting this Exception: I’ve added junit.jar library file. I’ve tried different versions of junit.jar: 4.4, 4.8, etc. How do I fix this Exception?
I have something like the following: I’d like to append i “0”s to the someNum string. Does it have some way I can multiply a string to repeat it like Python does? So I could just go: or something similar? Where, in this case, my final result would be: “123000”.
We are getting “java.lang.OutOfMemoryError : unable to create new native Thread” on 8GB RAM VM after 32k threads (ps -eLF| grep -c java) However, “top” and “free -m” shows 50% free memory available. JDk is 64 bit and tried with both HotSpot and JRockit.Server has Linux 2.6.18 We also tried OS stack size (ulimit -s) tweaking and max process(ulimit … Read more