A HashMap contains more than one key. You can use keySet() to get the set of all keys. team1.put(“foo”, 1); team1.put(“bar”, 2); will store 1 with key “foo” and 2 with key “bar”. To iterate over all the keys: for ( String key : team1.keySet() ) { System.out.println( key ); } will print “foo” and … Read more
Yes, you can get it from the File object by using File.toPath(). Keep in mind that this is only for Java 7+. Java versions 6 and below do not have it.
Maven uses the JAVA_HOME parameter to find which Java version it is supposed to run. I see from your comment that you can’t change that in the configuration. You can set the JAVA_HOME parameter just before you start maven (and change it back afterwards if need be). You could also go into your mvn(non-windows)/mvn.bat/mvn.cmd(windows) and … Read more
The solution was to add these flags to JVM command line when Tomcat is started: -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled You can do that by shutting down the tomcat service, then going into the Tomcat/bin directory and running tomcat6w.exe. Under the “Java” tab, add the arguments to the “Java Options” box. Click “OK” and then restart the service. … Read more