수다닷컴

import java.awt.Container;
import javax.swing.*;
public class PassArray extends JApplet {
// initialize applet
public void init()
{
JTextArea outputArea = new JTextArea();
Container container = getContentPane();
container.add( outputArea );
int array[] = { 1, 2, 3, 4, 5 };

String output = Effects of passing entire array by reference:\n +
The values of the original array are:\n;
// append original array elements to String output
for ( int counter = 0; counter array.length; counter++ )
output += + array[ counter ];

modifyArray( array ); // array passed by reference

output += \n\nThe values of the modified array are:\n;
// append modified array elements to String output
for ( int counter = 0; counter array.length; counter++ )
output += + array[ counter ];

output += \n\nEffects of passing array element by value:\n +
array[3] before modifyElement: + array[ 3 ];

modifyElement( array[ 3 ] ); // attempt to modify array[ 3 ]

output += \narray[3] after modifyElement: + array[ 3 ];
outputArea.setText( output );

} // end method init

// multiply each element of an array by 2
public void modifyArray( int array2[] )
{
for ( int counter = 0; counter array2.length; counter++ )
array2[ counter ] *= 2;
}

// multiply argument by 2
public void modifyElement( int element )
{
element *= 2;
}

} // end class PassArray

이게 코드인데요, 맨 처음부터 막혀서요..
JTextArea outputArea = new JTextArea();
Container container = getContentPane();
container.add( outputArea );
이게 대체 뭘 말하는건지 모르겠습니다.
검색해보았지만 알수없는 말들만 있어서...
getContentPane();와 add()가그냥 애플릿 그 공간을 생성하는 건가요?

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