How to dynamically set a JLabel text

StackOverflow https://stackoverflow.com/questions/21261674

質問 

int variable = 100;

label = new JLabel("<html><font color=red>variable</font><html>");

How do I make this display "100" on screen and not "variable"

役に立ちましたか？

解決

By building a String with it included:-

label = new JLabel("<html><font color=red>" + variable + "</font><html>");

This will output <html><font color=red>100</font><html> (well, in a label it will be formatted) The reason yours didn't work is because almost anything inside quotes is treated as a String so adding a variable in there is just the same as adding the name of the variable.

Additionally

This will also work for objects, not just primitive types like int by calling their toString() method and adding the output from that.

他のヒント

You can use String.format method:

label = new JLabel(String.format("<html><font color=red>%d</font><html>", variable));
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