这段java代码是什么意思？

if(ename.equals(inputtext.getText())) {
//Ex1Stmt估计是一个持久化的工具类，executeUpdate是更新方法，里面拼接的是update语句
Ex1Stmt.executeUpdate("UPDATE words SET 汉语='"+txt.getText().trim()+"' WHERE 英语='"+inputtext.getText().trim()+"'");

//弹出一个dialog对话框
JOptionPane.showMessageDialog(this,"记录修改成功！","恭喜",JOptionPane.WARNING_MESSAGE);
break;
}

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