1 requirement: design a class named allergy that provides information about the allergy of a patient. e.g. who reported the allergy(patient/doctor/relative), different symptoms of the allergy that are detected, severity, method that returns when was that allergy detected in that patient. I am thinking of something like this: Is this a good design of the … Read more
LWJGL uses its own variables for the path to the native libraries: If you kept the file structure from the LWJGL package you can use something like this:
1. If that class from which you want to call this method, is in the same package, then create an instance of this class and call the method. 2. Use Composition 3. It would be better to have a Generic ArrayList like ArrayList<Integer> etc… eg:
What do you mean by “the count”? The number of elements with a non-zero value? You’d just have to count them. There’s no distinction between that array and one which has explicitly been set with zero values. For example, these arrays are indistinguishable: Arrays in Java always have a fixed size – accessed via the length field. There’s no concept of … Read more
Don’t know how it worked and why it worked? 🙁 but it worked
tl;dr How to convert java.util.Date to java.sql.Date? Don’t. Both Date classes are outmoded. Sun, Oracle, and the JCP community gave up on those legacy date-time classes years ago with the unanimous adoption of JSR 310 defining the java.time classes. Use java.time classes instead of legacy java.util.Date & java.sql.Date with JDBC 4.2 or later. Convert to/from java.time if inter-operating with code not yet updated to java.time. Legacy Modern Conversion java.util.Date java.time.Instant java.util.Date.toInstant()java.util.Date.from( … Read more
instead of #rrggbb you should be using hex values 0 to F for rr, gg and bb: e.g. Color.parseColor(“#000000”) or Color.parseColor(“#FFFFFF”) Source From documentation: public static int parseColor (String colorString): Parse the color string, and return the corresponding color-int. If the string cannot be parsed, throws an IllegalArgumentException exception. Supported formats are: #RRGGBB #AARRGGBB ‘red’, ‘blue’, ‘green’, ‘black’, ‘white’, ‘gray’, … Read more
‘b’ or ‘B’ general If the argument arg is null, then the result is “false”. If arg is a boolean or Boolean, then the result is the string returned by String.valueOf(arg). Otherwise, the result is “true”. java docs : http://docs.oracle.com/javase/7/docs/api/java/util/Formatter.html#syntax
In Eclipse, click on Windows > Preferences, and then choose Maven in the left side. Check the box “Download repository index updates on startup“. Optionally, check the boxes Download Artifact Sources and Download Artifact JavaDoc. Click OK. The warning won’t appear anymore. Restart Eclipse.
With commons/lang you can do this using StringUtils.join: You can’t really beat that for brevity. Update: Re-reading this answer, I would prefer the other answer regarding Guava’s Joiner now. In fact, these days I don’t go near apache commons. Another Update: Java 8 introduced the method String.join() While this isn’t as flexible as the Guava version, it’s handy when … Read more