importjava.awt.*;importjava.awt.event.*;importjavax.swing.*;importjavax.swing.event.*;publicclassFZextendsJFrameimplementsActionListener{privateJButtonbutton;privateJTextFieldtext1,text2,text3,text4;privateJTextAreatext5;publicFZ(){super("循环位移方阵");this.setBounds(500,200,300,300);this.setBackground(java.awt.Color.lightGray);this.setDefaultCloseOperation(EXIT_ON_CLOSE);this.getContentPane().setLayout(newFlowLayout());this.getContentPane().add(newLabel("输入四个整数"));this.text1=newJTextField("1",2);this.text2=newJTextField("2",2);this.text3=newJTextField("3",2);this.text4=newJTextField("4",2);this.getContentPane().add(this.text1);this.getContentPane().add(this.text2);this.getContentPane().add(this.text3);this.getContentPane().add(this.text4);this.button=newJButton(&quo