Archive for August, 2004

Can I use “==” to compare two String?

Posted in Other at August 14th, 2004 | No Comments »

These days, when I’m reading some other guy’s code, I encounter some problem. In these code, I can read following codes: JButton button = new JButton("OK"); button.setActionCommand("OK"); button.addActionListener(this); …… actionPerformed(e) {     String s = e.getActionCommand();     if(s=="OK")     …… } Look, it use “==” but not “equals” here. “Oh, it must be a bug!”, I told myself. [...]