Java的AWT和Swing的8大布局

javax.swing.JFrame jFrame = new javax.swing.JFrame("test_ok");
        java.awt.BorderLayout borderLayout = new java.awt.BorderLayout();
        java.awt.CardLayout cardLayout = new java.awt.CardLayout();
        java.awt.FlowLayout flowLayout = new java.awt.FlowLayout();
        java.awt.GridBagLayout gridBagLayout = new java.awt.GridBagLayout();
        java.awt.GridLayout gridLayout = new java.awt.GridLayout();
        javax.swing.BoxLayout boxLayout = new javax.swing.BoxLayout(jFrame, 0);
        javax.swing.GroupLayout groupLayout = new javax.swing.GroupLayout(jFrame);
        javax.swing.SpringLayout springLayout = new javax.swing.SpringLayout();