question: public int generate ( int uc , int len , CharBuffer dst ) { if ( uc <= 0xffff ) { if ( Surrogate . is ( uc ) ) { error = CoderResult . malformedForLength ( len ) ; return - 1 ; } if ( dst . remaining ( ) < 1 ) { error = CoderResult . OVERFLOW ; return - 1 ; } dst . put ( ( char ) uc ) ; error = null ; return 1 ; } if ( uc < Surrogate . UCS4_MIN ) { error = CoderResult . malformedForLength ( len ) ; return - 1 ; } if ( uc <= Surrogate . UCS4_MAX ) { if ( dst . remaining ( ) < 2 ) { error = CoderResult . OVERFLOW ; return - 1 ; } dst . put ( Surrogate . high ( uc ) ) ; dst . put ( Surrogate . low ( uc ) ) ; error = null ; return 2 ; } error = CoderResult . unmappableForLength ( len ) ; return - 1 ; }
target:  Generates one or two UTF-16 characters to represent the given UCS-4 character.