Listing 4. Source code for the program named ArrayErr01.

public void main ( ) {     Number[] anArray = ; Number data = 0 ; Number moreData = 10 ;        // Store literal value in anArray[0]   anArray [ 0 ] = 2 ;   data .set( value , ( anArray [ 0 ] ) );   print( ( data .toString() ) );   // Store variable's value in anArray[1]   // The following statement causes a runtime error.   anArray [ 1 ] = moreData ;   }