Array Lists. Arrays in Java. Can set size at run time (as in C++) int actualSize = …; Emp [ ] staff = new Emp [actualSize]; Does not completely resolve problem of dynamically modifying arrays – once array size is set, cannot change easily. ArrayList class in Java.
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int actualSize = …;
Emp [ ] staff = new Emp [actualSize];
ArrayList staff = new ArrayList( );
staff.add (new Emp ( …) );
staff.add (new Emp (…) );
staff.size ( );
staff.trimToSize ( );
employee e = (Emp) staff.get( i);
ArrayList list = new ArrayList ( );
while ( …)
x = …;
X [ ] a = new X [list.size ( ) ];