Does Boycott work?

Let's make this simple and short.

Some days ago, Chinese people had a boycott to Japanese products, and it's still ongoing. People in China tried to use this kind of "non-governmental behavior" to put pressure on Japanese government, in order to change their foreign policy to China.

Do you think Boycott to Japanese product could work or not? If the answer depends on the extent, then what is most likely extent?
("work" means " could finally change Japan's foreign policy" but not "seriously hurt Japan's economy")

there are some points need attention:

1. China is Japan's top trade partner. (takes 20% market, while US takes 18%)

2. Japan has become the third biggest trade partner of China (after EU and US)

3. among young generations (15-40), more than 60% people showed their attitude of boycott.

4. Chinese government has no policy upon this.

5. Japan's interest groups (benefit from trade) play an important role in Japan's foreign policy decision making process.
your opinions will be appreciated!!