英文:
I am trying to user Swing in Eclipse but I keep getting this error. See below
问题
private void initialize() {frame = new JFrame();frame.setBounds(100, 100, 450, 300);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JLabel lblSomeText = new JLabel("Hello, World!");frame.getContentPane().add(lblSomeText, BorderLayout.CENTER); //错误在这里}
提示错误： "The Type container is not visible around the frame.getContentPane()"
英文:
private void initialize() {frame = new JFrame();frame.setBounds(100, 100, 450, 300);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JLabel lblSomeText = new JLabel("Hello, World!");frame.getContentPane().add(lblSomeText, BorderLayout.CENTER); //error here}
It says: "The Type container is not visible around the frame.getContentPane()"
答案1
得分: 1
以下完整的代码对我有效。请检查您的导入并展示您的整个代码，这样我们可以帮助您！
package stackoverflow;import javax.swing.JFrame;import javax.swing.JLabel;public class SwingTest {public static void main(String[] args) {JFrame frame = new JFrame();JLabel lblSomeText = new JLabel("Hello, World!");frame.getContentPane().add(lblSomeText);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(640, 480); // 使用 setSize() 替代 setBounds// frame.pack(); // 或者调用 pack() 替代frame.setLocationRelativeTo(null);frame.setVisible(true);}}
英文:
The following complete code works for me. Please check your imports and show us your entire code so we can help you!
package stackoverflow;import javax.swing.JFrame;import javax.swing.JLabel;public class SwingTest {public static void main( String[] args ) {JFrame frame = new JFrame();JLabel lblSomeText = new JLabel( "Hello, World!" );frame.getContentPane().add( lblSomeText );frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );frame.setSize( 640, 480 ); // use setSize() instead of setBounds// frame.pack(); // or call pack() insteadframe.setLocationRelativeTo( null );frame.setVisible( true );}}
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论