All Questions
9
questions
-3
votes
1
answer
4k
views
Using System.out.println() with loops and arrays [closed]
Is there anyway I can create a loop for System.out.println("...") and reading in the values? For example I wish to do this:
System.out.println("Input the Executive's name: ");
String eName = ...
- 19
-10
votes
1
answer
2k
views
Java: Why's this For-Loop thousands of times slower?
So I have a simple method I'm calling millions of times a second, and I noticed that it was taking 16% of all processing time!!
The offensive routine is as follows:
public void placeHolder(){
...
6
votes
2
answers
2k
views
Is using for loop syntax for a "with(variable)" block an anti-pattern?
I fooled around with for-loops, remembered the with keyword from delphi and came up with following pattern (defined as a live template in IntelliJ IDEA):
for ($TYPE$ $VAR$ = $VALUE$; $VAR$ != null; $...
- 179
2
votes
2
answers
11k
views
Is "continue" and "break" in loops antipattern/bad practice in Java? [duplicate]
I see the main purpose of continue in programming, it can get you out from the rest of loop steps like:
while(condition1){
... code ...
if(!condition2){
continue;
}
... code ...
if(...
- 1,429
2
votes
2
answers
3k
views
Is there a difference between declaring variables outside or inside a loop? [closed]
Is there any difference if I were to write something like this:
int row,col;
for(row = 0; row < data.length; row++){
for(col = 0; col < data[row].length;col++){
//do ...
- 31
1
vote
3
answers
595
views
How do you avoid looping mistakes? Mistakes that are not detected by systems [closed]
I had this crazy initialisation --
documentList = new ArrayList<Map<String,Integer>>();
which I intended to store a new map everytime in a loop but unfortunately put itself inside the ...
0
votes
10
answers
1k
views
Why does the instruction "do" require a "while"? [closed]
Since this statement is so common:
while (true) (Java)
or
while (1) (C)
or sometimes
for (;;)
Why is there not a single instruction for this? I could think that an instruction that could do it ...
- 8,058
37
votes
6
answers
135k
views
Why are nested loops considered bad practice?
My lecturer mentioned today that it was possible to "label" loops in Java so that you could refer to them when dealing with nested loops. So I looked up the feature as I didn't know about it and many ...
- 643
16
votes
5
answers
41k
views
Does it make a difference if I declare variables inside or outside a loop in Java?
Does it make a difference if I declare variables inside or outside a loop in Java?
Is this
for(int i = 0; i < 1000; i++) {
int temp = doSomething();
someMethod(temp);
}
equal to this (with ...
- 1,555