I keep getting array dimension missing public static Planet readPlanets(String filename) { allPlanets = new Planet; In in = new In (filename); int nplanets = in.readInt(); double radius =...
Consider this code: “int s = 20; int t = s++ + –s;”. What are the values of s and t?
Your code work fine. I just add little modification: package practise; import java.util.Scanner; public class scanccls { public static void main(String...
Solution is to use new String(c): System.out.println("" + new String(c)); And the "" + is really bogus and should be removed. Below is why you get what you get....
The question is is throwing illegal argument exception the right thing to do? It depends on how you want / need to “frame” this condition; i.e. is it a...
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...
It keeps running because it hasn’t encountered EOF. At end of stream: read() returns -1. read(byte) returns -1. read(byte, int, int) returns -1. readLine() returns null. readXXX() for any...
Information about _JAVA_OPTIONS
I want to change .class file’s method. I installed JD Eclipse Decompiler and opened the .class file. I added some codes and save .class file. But, .class file is...
You would use List<List<String>> listOfLists = new ArrayList<List<String>>(); And then when you needed to add a new “row”, you’d add the list: listOfLists.add(new ArrayList<String>()); I’ve used this mostly when...