| JGL - The Generic Collection Library for Java |
| JGL - The Generic Collection Library for Java |
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Array1 - Construction, enumeration, access, pushing, popping.
Array2 - Counting, finding, replacing, removing.
Array3 - Insertion.
Array4 - Reserving capacity.
Array5 - Exceptions.
Array6 - Removal.
Array1 Example Code
// Copyright(c) 1996,1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;
import java.util.Enumeration;
/**
* Construction, enumeration, access, pushing, popping.
*
* @see com.objectspace.jgl.Array
* @version 3.0.0
* @author ObjectSpace, Inc.
*/
public class Array1
{
public static void main( String[] args )
{
Array array = new Array();
array.pushBack( "bat" );
array.add( "cat" );
array.pushFront( "ape" );
System.out.println( array );
System.out.println();
System.out.println( "Enumerate the Array" );
Enumeration e = array.elements();
while ( e.hasMoreElements() )
System.out.println( e.nextElement() );
System.out.println();
System.out.println( "Iterate through the Array" );
for ( ArrayIterator i = array.begin(); !i.equals( array.end() ); i.advance() )
System.out.println( i.get() );
System.out.println();
System.out.println( "Demonstrate access" );
System.out.println( "array.at( 0 ) = " + array.at( 0 ) );
System.out.println( "array.front() = " + array.front() );
System.out.println( "array.at( 2 ) = " + array.at( 2 ) );
System.out.println( "array.back() = " + array.back() );
System.out.println();
System.out.println( "Demonstrate modification" );
array.put( 1, "fox" );
System.out.println( array );
array.popFront();
System.out.println( "After popFront() = " + array );
array.popBack();
System.out.println( "After popBack() = " + array );
}
}
Array( ape, bat, cat )
Enumerate the Array
ape
bat
cat
Iterate through the Array
ape
bat
cat
Demonstrate access
array.at( 0 ) = ape
array.front() = ape
array.at( 2 ) = cat
array.back() = cat
Demonstrate modification
Array( ape, fox, cat )
After popFront() = Array( fox, cat )
After popBack() = Array( fox )
Array2 Example Code
// Copyright(c) 1996,1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;
/**
* Counting, finding, replacing, removing.
*
* @see com.objectspace.jgl.Array
* @version 3.0.0
* @author ObjectSpace, Inc.
*/
public class Array2
{
public static void main( String[] args )
{
Array array = new Array();
array.add( "ape" );
array.add( "bat" );
array.add( "cat" );
array.add( "bat" );
array.add( "bat" );
array.add( "cat" );
System.out.println( array );
System.out.println();
System.out.println( "array.count( bat ) = " + array.count( "bat" ) );
int index = array.indexOf( "bat" );
System.out.println( "array.indexOf( bat ) = " + index );
array.remove( index );
System.out.println( "After array.remove( " + index + " ) = " + array );
array.replace( 0, 2, "bat", "BAT" );
System.out.println( "After array.replace( 0, 2, bat, BAT ) = " + array );
System.out.println( "array.remove( cat ) = " + array.remove( "cat" ) );
System.out.println( "After array.remove( cat ) = " + array );
array.remove( array.begin() );
System.out.println( "After array.remove( begin() ) = " + array );
}
}
Array( ape, bat, cat, bat, bat, cat )
array.count( bat ) = 3
array.indexOf( bat ) = 1
After array.remove( 1 ) = Array( ape, cat, bat, bat, cat )
After array.replace( 0, 2, bat, BAT ) = Array( ape, cat, BAT, bat, cat )
array.remove( cat ) = 2
After array.remove( cat ) = Array( ape, BAT, bat )
After array.remove( begin() ) = Array( BAT, bat )
Array3 Example Code
// Copyright(c) 1996,1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;
/**
* Insertion.
*
* @see com.objectspace.jgl.Array
* @version 3.0.0
* @author ObjectSpace, Inc.
*/
public class Array3
{
public static void main( String[] args )
{
Array array = new Array();
array.add( "bat" );
array.add( "cat" );
array.add( "dog" );
System.out.println( "array = " + array );
System.out.println();
array.insert( array.begin(), "ape" );
System.out.println( "After insert at begin = " + array );
array.insert( array.end(), "emu" );
System.out.println( "After insert at end = " + array );
array.insert( 3, 2, "fox" );
System.out.println( "After array.insert( 3, 2, fox ) = " + array );
}
}
array = Array( bat, cat, dog )
After insert at begin = Array( ape, bat, cat, dog )
After insert at end = Array( ape, bat, cat, dog, emu )
After array.insert( 3, 2, fox ) = Array( ape, bat, cat, fox, fox, dog, emu )
Array4 Example Code
// Copyright(c) 1996,1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;
/**
* Reserving capacity.
*
* @see com.objectspace.jgl.Array
* @version 3.0.0
* @author ObjectSpace, Inc.
*/
public class Array4
{
public static void main( String[] args )
{
Object ints[] = { "bat", "cat", "dog" };
Array array = new Array( ints );
array.put( 1, "CAT" );
System.out.println( "array = " + array + ", capacity = " + array.capacity() );
System.out.print( "array = " );
for ( int i = 0; i < ints.length; i++ )
System.out.print( ints[ i ] + " " );
System.out.println();
array.ensureCapacity( 100 );
array.put( 2, "DOG" );
System.out.println( "array = " + array + ", capacity = " + array.capacity() );
System.out.print( "array = " );
for ( int i = 0; i < ints.length; i++ )
System.out.print( ints[ i ] + " " );
System.out.println();
}
}
array = Array( bat, CAT, dog ), capacity = 3
array = bat cat dog
array = Array( bat, CAT, DOG ), capacity = 100
array = bat cat dog
Array5 Example Code
// Copyright(c) 1996,1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;
/**
* Exceptions.
*
* @see com.objectspace.jgl.Array
* @version 3.0.0
* @author ObjectSpace, Inc.
*/
public class Array5
{
public static void main( String[] args )
{
Array array = new Array();
try
{
array.popBack();
}
catch ( InvalidOperationException exception )
{
System.out.println( "Caught " + exception );
}
array.add( "ape" );
array.add( "bat" );
array.add( "cat" );
try
{
array.at( 5 );
}
catch ( IndexOutOfBoundsException exception )
{
System.out.println( "Caught " + exception );
}
}
}
Caught com.objectspace.jgl.InvalidOperationException: Array is empty
Caught java.lang.IndexOutOfBoundsException: Attempt to access index 5; valid range is 0..2
Array6 Example Code
// Copyright(c) 1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;
/**
* Removal.
*
* @see com.objectspace.jgl.Array
* @version 3.0.0
* @author ObjectSpace, Inc.
*/
public class Array6
{
public static void main( String[] args )
{
Array array = new Array();
array.add( "Texas" );
array.add( "Alabama" );
array.add( "Texas" );
array.add( "Mississippi" );
array.add( "Texas" );
array.add( "Louisiana" );
array.add( "Texas" );
array.add( "Alabama" );
array.add( "Texas" );
System.out.println( array );
System.out.println( "removed " + array.remove( "Texas", 4 ) );
System.out.println( array );
System.out.println( "removed " + array.remove( "Alabama", 4 ) );
System.out.println( array );
System.out.println( "removed " + array.remove( "Georgia", 4 ) );
System.out.println( array );
}
}
Array( Texas, Alabama, Texas, Mississippi, Texas, Louisiana, Texas, Alabama, Texas )
removed 4
Array( Alabama, Mississippi, Louisiana, Alabama, Texas )
removed 2
Array( Mississippi, Louisiana, Texas )
removed 0
Array( Mississippi, Louisiana, Texas )
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