Oct 19, 2009 · Rules of thumb: Use a List for reference types. Use arrays for primitives. If you have to deal with an API that is using arrays, it might be useful to use arrays. OTOH, it may be useful to …

Jul 29, 2009 · You can either use array declaration or array literal (but only when you declare and affect the variable right away, array literals cannot be used for re-assigning an array). For

Feb 23, 2009 · 2 Array elements in Java are initialized to default values when created. For numbers this means they are initialized to 0, for references they are null and for booleans they are false. To fill the …

Apr 4, 2009 · If Java was being designed today, it's entirely possible that arrays would have been left out altogether in favor of the ArrayList construct. Since arrays keep all the data in a contiguous chunk of …

Jul 15, 2009 · Arrays.asList () -> then calling the contains () method will always work, but a search algorithm is much better since you don't need to create a lightweight list wrapper around the array, …

Apr 6, 2011 · I think what you are trying to ask is how to use Arrays in java. In which case you don't import java.util.Arrays, you use the array syntax.

Arrays.toString As a direct answer, the solution provided by several, including @Esko, using the Arrays.toString and Arrays.deepToString methods, is simply the best. Java 8 - Stream.collect (joining …

Dec 18, 2013 · Make sure that if you change the length (or order) of the array, it still works, if you want to avoid a rewrite of every 'case' statement. If Java doesn't permit a function call for each 'case', a …

Aug 19, 2011 · In fact, Java has no true multidimensional arrays. As it happens, 0.0 is the default value for doubles in Java, thus the matrix will actually already be filled with zeros when you get it from . …

The length of an array in Java is immutable. So, you need to copy the desired part into a new array. Use copyOfRange method from java.util.Arrays class: