// Class fully inheritance and Person immutable GUI nun and Gridbag Layout import java.awt.; import java.awt.event.; import javax.swing.

Size: px

Start display at page:

Download "// Class fully inheritance and Person immutable GUI nun and Gridbag Layout import java.awt.*; import java.awt.event.*; import javax.swing."

Winfred Booth
5 years ago
Views:

1 // Class fully inheritance and Person immutable GUI nun and Gridbag Layout import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.border.*; import java.util.date; import java.text.*; class Person private String Name; private int nid; private Date bday; Person(String Name,int nid) bday=new Date(); this.name=name; this.nid=nid; public String getname() return Name; public String tostring() String st=""; SimpleDateFormat ft = new SimpleDateFormat ("E dd / MM / yyyy"); st+=("student Name "+Name+"\nNational ID "+nid+"\ndate "+ ft.format(bday)); return st; class Subjects private int subid; private double marks[]; private String sname; private double GPA; boolean paid; Subjects() public void setsubject(string sname,int subid,int mnum) this.sname=sname; this.subid=subid; marks=new double[mnum]; public void setmarks(double [] marks)

2 for(int i=0;i<this.marks.length;i++) this.marks[i]=marks[i]; public void setpaid(boolean paid) this.paid=paid; public boolean getpaid() return this.paid; private void setgpa() GPA=0; for(int i=0;i<marks.length;i++) GPA+=marks[i]; public double getgpa() this.setgpa(); return GPA; public String tostring() String st=""; if(paid) st+="\nsubject Name "+sname+"\nsubject Number "+subid; st+="\nnumber of Marks: "+marks.length+'\n'; for(int i=0;i<marks.length;i++) st+=marks[i]+" "; st+="\ngpa= "+getgpa(); else st="tuitions Not Paid No Records"; return st; class Student extends Person private int stid; private Subjects []m; private double ggpa; Student(String Name,int nid,int stid,int nsubj) super(name,nid);

3 this.stid=stid; m=new Subjects[nSubj]; for(int i=0;i<m.length;i++) m[i]=new Subjects(); public void addsubject(string sname,int subid,int mnum,int index, boolean ispaid) m[index].setsubject(sname,subid,mnum); m[index].setpaid(ispaid); public void setmarks(int index,double[]marks) m[index].setmarks(marks); public int numofmarks() return m.length; public String tostring() String ta=""; boolean tu=false; ta+=super.tostring(); ta+="\nstudent ID "+stid; for(int j=0;j<m.length;j++) ta+='\n'+m[j].tostring(); for(int j=0;j<m.length;j++) if(m[j].getpaid()) tu=true; if(tu) ta+=("\ngeneral GPA = "+getggpa()+"\n"); else ta+=("\ngeneral GPA = Tuitions Not Paid\n"); ta+=(" \n"); return ta; private double getggpa() ggpa=0; for(int j=0;j<m.length;j++) ggpa+=m[j].getgpa(); return ggpa/m.length; class TestStudentGread extends JFrame implements ActionListener private JLabel L=new JLabel("Number of Students ");

4 private JLabel L1=new JLabel(); private JLabel L2=new JLabel("1 Student Name"); private JLabel L3=new JLabel("Student National ID"); private JLabel L4=new JLabel("Student ID"); private JLabel L5=new JLabel("Number of enrolled subjects"); private JLabel L6=new JLabel("Student Name"); private JLabel L7=new JLabel("Subject Name"); private JLabel L8=new JLabel("Subject ID"); private JLabel L9=new JLabel("Marks Number"); private JTextField name=new JTextField(15); private JTextField sname=new JTextField(15); private JTextField nid=new JTextField(10); private JTextField sid=new JTextField(10); private JTextField subid=new JTextField(10); private JTextField subjn=new JTextField(10); private JTextField stnum=new JTextField(10); private JTextField mnum=new JTextField(4); private JTextField Mark[]; private JRadioButton rb=new JRadioButton("Tuitions Paid"); private JButton addst=new JButton("ADD"); private JButton addsu=new JButton("ADD Student"); private JButton addsubj=new JButton("ADD Marks"); private JTextArea ta=new JTextArea(); private JTabbedPane tapane = new JTabbedPane(); private JPanel p0,p1,p2,p3,p4,p5,p6; private JScrollPane scrollpane; private Student[]st; private double marks[]; private static int click; private static int click1; private static int subclick; TestStudentGread() setlayout(null); p0=new JPanel(); p0.setlayout(null); Border b=borderfactory.createlineborder(color.black,2); p0.setborder(borderfactory.createtitledborder(b,"number of Students P0")); p0.setsize(330,50); p0.setlocation(60,10); L.setSize(120,20); L.setLocation(10,18); stnum.setsize(80,20); stnum.setlocation(140,18); addst.setsize(80,20); addst.setlocation(230,18);

5 p0.add(l);p0.add(stnum); p0.add(addst); addst.addactionlistener(this); add(p0); p1=new JPanel(); p1.setlayout(null); Border b1=borderfactory.createlineborder(color.blue,2); p1.setborder(borderfactory.createtitledborder(b1,"students Data P1")); p1.setsize(250,130); p1.setlocation(180,60); L2.setSize(120,20); L3.setSize(120,20); L4.setSize(120,20); L5.setSize(190,20); L2.setLocation(15,20); L3.setLocation(15,40); L4.setLocation(15,60); L5.setLocation(15,80); name.setsize(60,20); name.setlocation(180,20); nid.setsize(60,20); nid.setlocation(180,40); sid.setsize(60,20); sid.setlocation(180,60); subjn.setsize(60,20); subjn.setlocation(180,80); p1.add(l2);p1.add(name); p1.add(l3);p1.add(nid); p1.add(l4);p1.add(sid); p1.add(l5);p1.add(subjn); addsu.setsize(120,20); addsu.setlocation(60,100); p1.setvisible(false); p1.add(addsu); addsu.addactionlistener(this); add(p1); p2=new JPanel(); Border b2=borderfactory.createlineborder(color.gray,2); p2.setborder(borderfactory.createtitledborder(b2,"subject Data P2")); p2.setlayout(null); p2.setsize(170,120); p2.setlocation(10,60); L1.setSize(120,20); L6.setSize(100,20); L7.setSize(120,20); L8.setSize(120,20);

6 L9.setSize(190,20); L1.setLocation(90,20); L6.setLocation(5,20); L7.setLocation(10,40); L8.setLocation(10,60); L9.setLocation(10,80); sname.setsize(60,20); sname.setlocation(100,40); subid.setsize(60,20); subid.setlocation(100,60); mnum.setsize(60,20); mnum.setlocation(100,80); p2.add(l6);p2.add(l1); p2.add(l7);p2.add(sname); p2.add(l8);p2.add(subid); p2.add(l9);p2.add(mnum); mnum.addactionlistener(this); addsubj.addactionlistener(this); p2.setvisible(false); add(p2); p3=new JPanel(); Border b3=borderfactory.createlineborder(color.green,2); p3.setborder(borderfactory.createtitledborder(b3,"the Results P3")); p3.setlayout(null); p3.setsize(400,100); p3.setlocation(10,300); ta.seteditable(false); ta.setlinewrap(true); ta.setwrapstyleword(true); JScrollPane areascrollpane = new JScrollPane(ta); areascrollpane.setverticalscrollbarpolicy(jscrollpane.vertical_scrollbar_alw AYS); areascrollpane.sethorizontalscrollbarpolicy(jscrollpane.horizontal_scrollbar _AS_ NEEDED); areascrollpane.setsize(380,70); areascrollpane.setlocation(10,20); p3.add(areascrollpane); p3.setvisible(false); add(p3); public void actionperformed(actionevent e) if(e.getsource()==addst) int ist=0;

7 try ist=integer.parseint(stnum.gettext()); catch(numberformatexception q) JOptionPane.showMessageDialog(this,q.getMessage()+"\nYou must enter integers. Please try again.\n", "Input Error",JOptionPane.ERROR_MESSAGE); stnum.settext(""); if(ist!=0) st=new Student[ist]; p1.setvisible(true); stnum.seteditable(false); if(e.getsource()==addsu) int inid=0; int isid=0; int isubjn=0; try inid=integer.parseint(nid.gettext()); isid=integer.parseint(sid.gettext()); isubjn=integer.parseint(subjn.gettext()); catch(numberformatexception q) JOptionPane.showMessageDialog(this,q.getMessage()+"\nYou must enter integers. Please try again.\n", "Input Error",JOptionPane.ERROR_MESSAGE); nid.settext("");sid.settext("");subjn.settext(""); if(isubjn!=0) if(click<st.length) st[click]=new Student(name.getText(),inId,isId,isubjN); name.settext("");nid.settext("");sid.settext("");subjn.settext(""); if(click== st.length-1) L1.setText(st[0].getName()); click=0; name.seteditable(false); nid.seteditable(false);

8 sid.seteditable(false); subjn.seteditable(false); p2.setvisible(true); click++; L2.setText((click+1)+" Student Name"); if(e.getsource()==mnum) int intmnum=0; int isubid=0; try intmnum=integer.parseint(mnum.gettext()); isubid=integer.parseint(subid.gettext()); catch(numberformatexception q) JOptionPane.showMessageDialog(this,q.getMessage()+"\nYou must enter integers. Please try again.\n", "Input Error",JOptionPane.ERROR_MESSAGE); mnum.settext("");subid.settext(""); if(intmnum!=0) Mark=new JTextField[Integer.parseInt(mNum.getText())]; JLabel[]la=new JLabel[Integer.parseInt(mNum.getText())]; p4=new JPanel(new GridLayout((Integer.parseInt(mNum.getText())+1),2,10,0)); Border b4=borderfactory.createlineborder(color.yellow,2); p4.setborder(borderfactory.createtitledborder(b4,"enter the Marks p4")); for(int y=0,i=0;i<integer.parseint(mnum.gettext());i++,y+=20) la[i]=new JLabel((i+1)+" Mark"); Mark[i]=new JTextField(6); la[i].setsize(70,20); la[i].setlocation(15,20+y); Mark[i].setSize(70,20); Mark[i].setLocation(90,20+y); p4.add(la[i]); p4.add(mark[i]); addsubj.setlocation(200,20); addsubj.setsize(100,20); rb.setlocation(200,50); rb.setsize(100,20); p4.add(rb); p4.add(addsubj);

9 scrollpane = new JScrollPane(p4); scrollpane.setsize(350,100); scrollpane.setlocation(10,200); add(scrollpane); revalidate(); repaint(); if(e.getsource()==addsubj) if(subclick<st[click1].numofmarks()&&click1<st.length) st[click1].addsubject(sname.gettext(),integer.parseint(subid.gettext()),integer.parseint (mnum. gettext()), subclick,rb.isselected()); marks=new double[integer.parseint(mnum.gettext())]; for(int i=0;i<integer.parseint(mnum.gettext());i++) marks[i]=double.parsedouble(mark[i].gettext()); Mark[i].setText(""); st[click1].setmarks(subclick,marks); subclick++; sname.settext("");subid.settext("");mnum.settext("");rb.setselected(false); for(jtextfield f:mark) f.seteditable(false); remove(scrollpane); revalidate(); repaint(); if(subclick==st[click1].numofmarks()&&click1<st.length) click1++; subclick=0; if(click1<=st.length-1) L1.setText(st[click1].getName()); if(click1==st.length) add(scrollpane); revalidate(); repaint(); p3.setvisible(true); ta.settext(""); sname.seteditable(false);subid.seteditable(false);mnum.seteditable(false); click1=0;

10 subclick=0; for(int i=0;i<st.length;i++) ta.append(st[i].tostring()); public static void main(string[] args) JFrame frame = new TestStudentGread(); frame.settitle("records"); frame.setsize(450, 450); frame.setlocationrelativeto(null); frame.setdefaultcloseoperation(jframe.exit_on_close); frame.setvisible(true);

JAVA NOTES GRAPHICAL USER INTERFACES

1 JAVA NOTES GRAPHICAL USER INTERFACES Terry Marris 24 June 2001 5 TEXT AREAS 5.1 LEARNING OUTCOMES By the end of this lesson the student should be able to understand how to get multi-line input from the