importjava.awt.*;importjava.awt.event.*;importjavax.swing.*;classFushuFrameextendsJFrame{publicFushuFrame(){setTitle("复数计算器");setSize(350,250);ContainercontentPane=getContentPane();KEYPanelpane=newKEYPanel();contentPane.add(pane);}classKEYPanelextendsJPanel{publicJTextFieldtf1;p