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
I have this function in my code base, this should work for you. also see this similar question
This is a typical case of the maven-assembly plugin breaking things. Why this happened to us Different JARs (hadoop-commons for LocalFileSystem, hadoop-hdfs for DistributedFileSystem) each contain a different file called org.apache.hadoop.fs.FileSystem in their META-INFO/services directory. This file lists the canonical classnames of the filesystem implementations they want to declare (This is called a Service Provider Interface implemented via java.util.ServiceLoader, see org.apache.hadoop.FileSystem#loadFileSystems). When we use maven-assembly-plugin, it merges all our … Read more
You need a Temperature class. I’m just guessing that you’ve added those methods to the TempProg considering the improper “constructor”. What you need is another class all together like so… The constructor should not return a value. It should look like… public Temperature(), or some variation depending on your specific requirements.
In Java, is there any way to get(catch) all exceptions instead of catch the exception individually?
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’, … Read more
You can use System.out.format(…) Example: Result: Or use the following code for left-aligned output: