Java cleanups (#1776)

* Remove extra ';'s
* Remove unnecessary conversions to String
* Use StandardCharsets object
* Replace infinite while with check for interrupted thread
* Remove redundant local vars
* Remove redundant throws clause
* Remove redundant primitive wrapping
* Fix malformed Nested class test
* Remove unnecessary unboxing
* Remove unnecessary explicit type argument
* Replace lambdas with method references
* Replace statement lambdas with expression lambdas
* Replace null check with method call
* Replace number comparison with method call
* Fix broken javadoc comments
* Replace Arrays.asList with singletonLists
* Remove excessive lambda usage
* Remove redundant string operation
* Remove redundant type casts
* Remove unnecessary returns
* Remove redundant suppressions
* Fix unresolved file reference
* static analysis fixes

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/templates/robotbaseskeleton/Robot.java

@@ -41,7 +41,7 @@ public class Robot extends RobotBase {
     // Tell the DS that the robot is ready to be enabled
     HAL.observeUserProgramStarting();
 
-    while (true) {
+    while (!Thread.currentThread().isInterrupted()) {
       if (isDisabled()) {
         m_ds.InDisabled(true);
         disabled();