java – 如何在Jtextfield中限制我想要的输入长度?
发布时间:2020-12-15 08:40:45 所属栏目:Java 来源:网络整理
导读:username = new JTextField(""); username.setBounds(330,550,230,30); username.addActionListener(this); username.requestFocus(); // sets focus on JTextField this.add(username); 解决方法 JTextField username = new JTextField("") ;final int limi
username = new JTextField(""); username.setBounds(330,550,230,30); username.addActionListener(this); username.requestFocus(); // sets focus on JTextField this.add(username); 解决方法JTextField username = new JTextField("") ; final int limit = 10; username .setDocument(new PlainDocument(){ @Override public void insertString(int offs,String str,AttributeSet a) throws BadLocationException { if(getLength() + str.length() <= limit) super.insertString(offs,str,a); } }); (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |