java Programming Glossary: alist
Reverse the arraylist in simplest way? http://stackoverflow.com/questions/10766492/reverse-the-arraylist-in-simplest-way arraylist in simplest way Need the simplest way ArrayList aList new ArrayList Add elements to ArrayList object aList.add 1 aList.add.. aList new ArrayList Add elements to ArrayList object aList.add 1 aList.add 2 aList.add 3 aList.add 4 aList.add 5 while.. new ArrayList Add elements to ArrayList object aList.add 1 aList.add 2 aList.add 3 aList.add 4 aList.add 5 while listIterator.hasPrevious..
Generic screws up non-related collection http://stackoverflow.com/questions/14882003/generic-screws-up-non-related-collection class A public static class B T extends Comparable List A aList new ArrayList A public List A getAList return aList public.. A aList new ArrayList A public List A getAList return aList public int compare T t T t1 return t.compareTo t1 public.. B b new B for A a b.getAList THIS DOES NOT WORK List A aList b.getAList THIS WORKS for A a aList This code throws an error..
Read Java JVM startup parameters (eg -Xmx) http://stackoverflow.com/questions/1518213/read-java-jvm-startup-parameters-eg-xmx bean ManagementFactory.getRuntimeMXBean List String aList bean.getInputArguments for int i 0 i aList.size i System.out.println.. List String aList bean.getInputArguments for int i 0 i aList.size i System.out.println aList.get i That should show all.. for int i 0 i aList.size i System.out.println aList.get i That should show all JVM parameters. Note we do not have..
Can JSF 2.0 be used with Websphere application server version 7.x http://stackoverflow.com/questions/1718934/can-jsf-2-0-be-used-with-websphere-application-server-version-7-x
Library to encode/decode from json to java.util.Map? http://stackoverflow.com/questions/2496494/library-to-encode-decode-from-json-to-java-util-map And be able to have it again as a list of maps List aList List fromJson jsonStirng java json map converter share improve..
Demonstrate covariance and contravariance in Java? http://stackoverflow.com/questions/2501023/demonstrate-covariance-and-contravariance-in-java Generics This is also possible for Generics List String aList... List extends Object covariantList aList List super String.. List String aList... List extends Object covariantList aList List super String contravariantList aList You can now access.. covariantList aList List super String contravariantList aList You can now access all methods of covariantList that doesn't..
Assigning an array to an ArrayList in Java http://stackoverflow.com/questions/3746639/assigning-an-array-to-an-arraylist-in-java You can use Arrays.asList Type anArray ... ArrayList Type aList new ArrayList Type Arrays.asList anArray or alternatively Collections.addAll.. anArray or alternatively Collections.addAll ArrayList Type aList new ArrayList Type Collections.addAll theList anArray Note that..
Use interface or type for variable definition in java? http://stackoverflow.com/questions/3768869/use-interface-or-type-for-variable-definition-in-java or type for variable definition in java ArrayList aList new ArrayList List aList new ArrayList What's the difference.. definition in java ArrayList aList new ArrayList List aList new ArrayList What's the difference between these two and which..
Java Generics http://stackoverflow.com/questions/490091/java-generics typed classes to do generic operations. ArrayList String aList new ArrayList String aList.add One String element aList.get.. operations. ArrayList String aList new ArrayList String aList.add One String element aList.get 0 no cast needed System.out.println.. aList new ArrayList String aList.add One String element aList.get 0 no cast needed System.out.println Got one element Now..
Java Generic List<List<? extends Number>> http://stackoverflow.com/questions/746089/java-generic-listlist-extends-number How come in java we cannot do List List extends Number aList new ArrayList List Number Even though this is OK List extends.. List Number Even though this is OK List extends Number aList new ArrayList Number Compiler error message is Type mismatch..
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