How do I get bonded glass in minecraft?
The question is rather imprecise, but if you mean panes and you're wondering why they are just bars, just build a block next to it or another pane of glass and it will connect
By downloading the appropriate resource packs (texture packs).
The question is actually too imprecise but I think that you have to place two glass rods next to each other
If you mean the block you need a certain texture pack which contains it
You need OptiFine that you have to download and then the glasses are connected