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        this.length = this.maximum_length = (short) ( ( len + zt ) * 2 );
        this.buffer = new short[len + zt];

        int i;
        for ( i = 0; i < len; i++ ) {
            this.buffer[ i ] = (short) str.charAt(i);
        }
        if ( zterm ) {
            this.buffer[ i ] = (short) 0;
        }
    }


    @Override
    public String toString () {
        int len = this.length / 2 - ( this.zterm ? 1 : 0 );