How can I get the last value of arrayList (e.g. I dont know the last index of the ArrayList)?
Thanks.
I am new to java. I had a doubt.
class ArrTest{
public static void main(String args[])
{
int i = 0;
int[] a = {3,6};
a[i] = i = 9;
System.out.println(i + " " + a[0] + " " + a[1]); // 9 9 6
}
}
Thanks in advance
Imagine I have the methods:
public static void funcA() {...}
public static void funcB()
{
byteBuffer.wrap(someByteArray, 0, someByteArra.length);
}
IN JAVA API:
public static ByteBuffer wrap(byte[]array, int offset, int length)
{
try {
return new HeapByteBuffer(array, offset, length);
} catch (IllegalArgumentException x) {
throw new IndexOutOfBoundsException();...
I'm trying to manually throw an index out of bounds exception for an array.
I know that to throw a regular exception, I can do something like:
if(x>array.length){
throw new Exception("Bad choice!");
}
But how can I do the index out of bounds exception?
Thanks
I wrote this little function just for practice, but an exception ("String index out of range: 29") is thrown and I don't know why...
(I know this isn't the best way to write this function and can I use regular expressions.)
This is the code:
public String retString(String x)
{
int j=0;
int i=0;
StringBuffer y = new StringBuffer(x);
try
{
while ( y.charAt(i) != '\0' )
...
I'm really confused: I'm simply trying to add the names of each object in an ArrayList to another ArrayList.
for (int i = 0; i < availableParts.size(); i++) {
for (int j = 0; j < namesOfIngredients.size(); j++){
if (availableParts.get(i).getName() != namesOfParts.get(j)){
namesOfParts.add(availableParts.get(i).getName());
}
}//middle if statement ma...
I have a simple code below:
import java.util.ArrayList;
public class BoidList extends ArrayList
{
synchronized public Boid GetBoid( int idx_ ) throws ArrayIndexOutOfBoundsException
{
if( idx_ < super.size() &&
idx_ >= 0 )
{
return (Boid) super.get(idx_);
}
else
{
throw new ArrayIndexOutOfBoundsException();
}
}
synchronized pub...
