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java applet program

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java applet program

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zedenaka	26 Jul, 2007 - 05:23 AM Post #1
New D.I.C Head Joined: 4 Jul, 2007 Posts: 32 My Contributions	guys i need help on my program. i cant seem to find whats wrong. pls i need your help. here is the .java code: CODE import java.awt.; import java.applet.; import java.awt.event.; public class mp1f extends Applet implements ActionListener { Label lnLbl=new Label("Last Name: "); TextField lnTxt=new TextField(20); Label fnLbl=new Label("First Name: "); TextField fnTxt=new TextField(20); Label miLbl=new Label("Middle Initial: "); TextField miTxt=new TextField(20); Label posLbl=new Label("Position: "); TextField posTxt=new TextField(20); Label hrsLbl=new Label("No. of Working Hours: "); TextField hrsTxt=new TextField(20); Button compButton=new Button("COMPUTE"); Button rstButton=new Button("RESET"); Label scLbl=new Label("Salary Computation:"); Label rateLbl=new Label("Rate: "); TextField rateTxt=new TextField(20); Label gpLbl=new Label("Gross Pay: "); TextField gpTxt=new TextField(20); Label dedLbl=new Label("Deductions:"); Label sssLbl=new Label("SSS: "); TextField sssTxt=new TextField(20); Label taxLbl=new Label("Tax: "); TextField taxTxt=new TextField(20); Label medLbl=new Label("Medicare: "); TextField medTxt=new TextField(20); Label tdLbl=new Label("Total Deductions: "); TextField tdTxt=new TextField(20); Label bonLbl=new Label("Bonus: "); TextField bonTxt=new TextField(20); Label npLbl=new Label("Net Pay of: "); public void init() { add(lnLbl); add(lnTxt); add(fnLbl); add(fnTxt); add(miLbl); add(miTxt); add(posLbl); add(posTxt); add(hrsLbl); add(hrsTxt); add(compButton); compButton.addActionListener(this); add(rstButton); rstButton.addActionListener(this); add(scLbl); add(rateLbl); add(rateTxt); add(gpLbl); add(gpTxt); add(dedLbl); add(sssLbl); add(sssTxt); add(taxLbl); add(taxTxt); add(medLbl); add(medTxt); add(tdLbl); add(tdTxt); add(bonLbl); add(bonTxt); add(npLbl); } public void actionPerformed(ActionEvent e) { String arg,ln,fn,mi,pos; int rate; double gp,sss,tax,med,td,bon,np,hrs; ln=lnTxt.getText(); fn=fnTxt.getText(); mi=miTxt.getText(); pos=posTxt.getText(); hrs=Double.parseDouble(hrsTxt.getText()); gp=Double.parseDouble(gpTxt.getText()); sss=Double.parseDouble(sssTxt.getText()); tax=Double.parseDouble(taxTxt.getText()); med=Double.parseDouble(medTxt.getText()); td=Double.parseDouble(tdTxt.getText()); bon=Double.parseDouble(bonTxt.getText()); np=Double.parseDouble(npLbl.getText()); rate=Integer.parseInt(rateTxt.getText()); arg=e.getActionCommand(); if(pos=="manager") { rate=800; rateTxt.setText("+rate"); } else if(pos=="supervisor") { rate=500; rateTxt.setText("+rate"); } else if(pos=="employee") { rate=300; rateTxt.setText("+rate"); } else { rateTxt.setText("Wrong Input"); } arg=e.getActionCommand(); if(arg=="COMPUTE") { gp=ratehrs; gpTxt.setText("+gp"); sss=(gp)(0.5); sssTxt.setText("+sss"); tax=(gp)(0.10); taxTxt.setText("+tax"); med=100; medTxt.setText("+med"); td=(sss+tax)+med; tdTxt.setText("+td"); if(bon>=20000) { bon=(gp)(0.5); bonTxt.setText("+bon"); } else if(bon<20000) { bon=(gp)(0.3); bonTxt.setText("+bon"); } np=(gp-td)+bon; npLbl.setText("Net Pay of" +fn+ "is" +np); } if(arg=="RESET") { lnTxt.setText(" "); fnTxt.setText(" "); miTxt.setText(" "); posTxt.setText(" "); hrsTxt.setText(" "); rateTxt.setText(" "); gpTxt.setText(" "); sssTxt.setText(" "); taxTxt.setText(" "); medTxt.setText(" "); tdTxt.setText(" "); bonTxt.setText(" "); npLbl.setText("Net Pay of:"); } } } and here is for the html file CODE <html> <applet code="mp1f.class" height=600 width=200> </applet> </html>
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Amadeus	RE: Java Applet Program 26 Jul, 2007 - 05:31 AM Post #2
g++ -o drink whiskey.cpp Joined: 12 Jul, 2002 Posts: 12,977 Thanked: 116 times Dream Kudos: 25 My Contributions	Great! Can you elaborate as to the problem? Are you getting errors? Undesired behaviuor?
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zedenaka	RE: Java Applet Program 26 Jul, 2007 - 05:40 AM Post #3
New D.I.C Head Joined: 4 Jul, 2007 Posts: 32 My Contributions	well you see when i run the program i can input the last name,first name, middle initial,position and no of hours worked. but when i click the compute button it wont create an output on the boxes below which should have the output. even when i click the clear button(which should clear all data) nothing happens. i think it is in this part which have the problem, but i cant seem to figure it out. pls help. CODE public void actionPerformed(ActionEvent e) { String arg,ln,fn,mi,pos; int rate; double gp,sss,tax,med,td,bon,np,hrs; ln=lnTxt.getText(); fn=fnTxt.getText(); mi=miTxt.getText(); pos=posTxt.getText(); hrs=Double.parseDouble(hrsTxt.getText()); gp=Double.parseDouble(gpTxt.getText()); sss=Double.parseDouble(sssTxt.getText()); tax=Double.parseDouble(taxTxt.getText()); med=Double.parseDouble(medTxt.getText()); td=Double.parseDouble(tdTxt.getText()); bon=Double.parseDouble(bonTxt.getText()); np=Double.parseDouble(npLbl.getText()); rate=Integer.parseInt(rateTxt.getText()); arg=e.getActionCommand(); if(pos=="manager") { rate=800; rateTxt.setText("+rate"); } else if(pos=="supervisor") { rate=500; rateTxt.setText("+rate"); } else if(pos=="employee") { rate=300; rateTxt.setText("+rate"); } else { rateTxt.setText("Wrong Input"); } arg=e.getActionCommand(); if(arg=="COMPUTE") { gp=ratehrs; gpTxt.setText("+gp"); sss=(gp)(0.5); sssTxt.setText("+sss"); tax=(gp)(0.10); taxTxt.setText("+tax"); med=100; medTxt.setText("+med"); td=(sss+tax)+med; tdTxt.setText("+td"); if(bon>=20000) { bon=(gp)(0.5); bonTxt.setText("+bon"); } else if(bon<20000) { bon=(gp)*(0.3); bonTxt.setText("+bon"); } np=(gp-td)+bon; npLbl.setText("Net Pay of" +fn+ "is" +np); } if(arg=="RESET") { lnTxt.setText(" "); fnTxt.setText(" "); miTxt.setText(" "); posTxt.setText(" "); hrsTxt.setText(" "); rateTxt.setText(" "); gpTxt.setText(" "); sssTxt.setText(" "); taxTxt.setText(" "); medTxt.setText(" "); tdTxt.setText(" "); bonTxt.setText(" "); npLbl.setText("Net Pay of:"); } } }
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zedenaka	RE: Java Applet Program 26 Jul, 2007 - 05:50 AM Post #4
New D.I.C Head Joined: 4 Jul, 2007 Posts: 32 My Contributions	heres what the output should be but when i click on the compute button or the clear button it wont work Attached thumbnail(s)
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PennyBoki	RE: Java Applet Program 26 Jul, 2007 - 05:52 AM Post #5
system("revolution"); Joined: 11 Dec, 2006 Posts: 2,075 Thanked: 12 times Dream Kudos: 500 Expert In: Java,C++,C My Contributions	Hi you are comparing strings with ==, which is not ok use the .equals("RESET") method, or better yet use the e.getSource method for the actionPerformed.
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zedenaka	RE: Java Applet Program 26 Jul, 2007 - 06:08 AM Post #6
New D.I.C Head Joined: 4 Jul, 2007 Posts: 32 My Contributions	QUOTE(PennyBoki @ 26 Jul, 2007 - 06:52 AM) Hi you are comparing strings with ==, which is not ok use the .equals("RESET") method, or better yet use the e.getSource method for the actionPerformed. hi PennyBoki! you see my problem is that.... im just new to java applets. our class has just started it.... sorry but i cannot understand what you told me.... we are just at the basics......so kindly elaborate more on what youre trying to tell me....or better yet....i beg you guys to modify my program using only the basics.....this program is as far as i go nothing more to it.... pls pls pls pls pls pls help me
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PennyBoki	RE: Java Applet Program 26 Jul, 2007 - 06:14 AM Post #7
system("revolution"); Joined: 11 Dec, 2006 Posts: 2,075 Thanked: 12 times Dream Kudos: 500 Expert In: Java,C++,C My Contributions	instead of QUOTE if(arg=="RESET") { lnTxt.setText(" "); fnTxt.setText(" "); miTxt.setText(" "); posTxt.setText(" "); hrsTxt.setText(" "); rateTxt.setText(" "); gpTxt.setText(" "); sssTxt.setText(" "); taxTxt.setText(" "); medTxt.setText(" "); tdTxt.setText(" "); bonTxt.setText(" "); npLbl.setText("Net Pay of:"); } } do CODE if(e.getSource()==rstButton) //the name of the button { lnTxt.setText(" "); fnTxt.setText(" "); miTxt.setText(" "); posTxt.setText(" "); hrsTxt.setText(" "); rateTxt.setText(" "); gpTxt.setText(" "); sssTxt.setText(" "); taxTxt.setText(" "); medTxt.setText(" "); tdTxt.setText(" "); bonTxt.setText(" "); npLbl.setText("Net Pay of:"); } } Now do the same for the other button and now I ask you: On what event you think these(below) would happen(take action)? QUOTE ln=lnTxt.getText(); fn=fnTxt.getText(); mi=miTxt.getText(); pos=posTxt.getText(); hrs=Double.parseDouble(hrsTxt.getText()); gp=Double.parseDouble(gpTxt.getText()); sss=Double.parseDouble(sssTxt.getText()); tax=Double.parseDouble(taxTxt.getText()); med=Double.parseDouble(medTxt.getText()); td=Double.parseDouble(tdTxt.getText()); bon=Double.parseDouble(bonTxt.getText()); np=Double.parseDouble(npLbl.getText()); rate=Integer.parseInt(rateTxt.getText());
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zedenaka	RE: Java Applet Program 26 Jul, 2007 - 07:51 AM Post #8
New D.I.C Head Joined: 4 Jul, 2007 Posts: 32 My Contributions	im not very sure about that cause our prof told us it used to convert a string to a number. thats why i used it. and because ln,fm,mi & pos are strings, i just use the .getText so i could input. guys im trying to do my best but i cant still understand. pls help me correct the mistakes ive done. so i could easily understand. hope im not being rude. plsssssssssss
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jmanuelh	RE: Java Applet Program 26 Jul, 2007 - 08:47 AM Post #9
New D.I.C Head Joined: 18 Nov, 2006 Posts: 23 Thanked: 2 times My Contributions	Hi! As penny said, to compare strings you need to use equals(), because string isn't a primitive variable like integer of char, so you have to use something like this: CODE if(pos.equals("manager")) to compare 2 strings To convert string to int you need to parse like this: CODE int converted = Integer.parseInt(ln); //where ln is, put the string variable you want to convert J. Manuel This post has been edited by jmanuelh: 26 Jul, 2007 - 08:54 AM
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zedenaka	RE: Java Applet Program 29 Jul, 2007 - 06:00 PM Post #10
New D.I.C Head Joined: 4 Jul, 2007 Posts: 32 My Contributions	i hate this i cant still get it!!!! sorry guys but im just a newbie in java. or may i ask that this program is a liitle advance for me... helpppppppppppppp
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zedenaka	RE: Java Applet Program 4 Aug, 2007 - 08:16 AM Post #11
New D.I.C Head Joined: 4 Jul, 2007 Posts: 32 My Contributions	thanks i already got this one CODE import java.awt.; import java.applet.; import java.awt.event.; public class mp1f extends Applet implements ActionListener,ItemListener { Label lnLbl=new Label("Last Name: "); TextField lnTxt=new TextField(20); Label fnLbl=new Label("First Name: "); TextField fnTxt=new TextField(20); Label miLbl=new Label("Middle Initial: "); TextField miTxt=new TextField(20); Label posLbl=new Label("Position: "); TextField posTxt=new TextField(20); Label hrsLbl=new Label("No. of Working Hours: "); TextField hrsTxt=new TextField(20); Button compButton=new Button("COMPUTE"); Button rstButton=new Button("RESET"); Label scLbl=new Label("Salary Computation:"); Label rateLbl=new Label("Rate: "); TextField rateTxt=new TextField(20); Label gpLbl=new Label("Gross Pay: "); TextField gpTxt=new TextField(20); Label dedLbl=new Label("Deductions:"); Label sssLbl=new Label("SSS: "); TextField sssTxt=new TextField(20); Label taxLbl=new Label("Tax: "); TextField taxTxt=new TextField(20); Label medLbl=new Label("Medicare: "); TextField medTxt=new TextField(20); Label tdLbl=new Label("Total Deductions: "); TextField tdTxt=new TextField(20); Label bonLbl=new Label("Bonus: "); TextField bonTxt=new TextField(20); Label npLbl=new Label("Net Pay of: "); public void init() { add(lnLbl); add(lnTxt); add(fnLbl); add(fnTxt); add(miLbl); add(miTxt); add(posLbl); add(posTxt); add(hrsLbl); add(hrsTxt); add(compButton); compButton.addActionListener(this); add(rstButton); rstButton.addActionListener(this); add(scLbl); add(rateLbl); add(rateTxt); add(gpLbl); add(gpTxt); add(dedLbl); add(sssLbl); add(sssTxt); add(taxLbl); add(taxTxt); add(medLbl); add(medTxt); add(tdLbl); add(tdTxt); add(bonLbl); add(bonTxt); add(npLbl); } public void actionPerformed(ActionEvent e) { String arg,ln,fn,mi,pos; int rate=0,med=100; double gp,sss,tax,td,bon=0,np,hrs; hrs=Double.parseDouble(hrsTxt.getText()); fn=fnTxt.getText(); ln=lnTxt.getText(); mi=miTxt.getText(); pos=posTxt.getText(); arg=e.getActionCommand(); if(pos.equals("manager")) { rate=800; rateTxt.setText(""+rate); } if(pos.equals("supervisor")) { rate=500; rateTxt.setText(""+rate); } if(pos.equals("employee")) { rate=300; rateTxt.setText(""+rate); } if(arg=="COMPUTE") { gp=ratehrs; gpTxt.setText(""+gp); sss=(gp)(0.5); sssTxt.setText(""+sss); tax=(gp)(0.10); taxTxt.setText(""+tax); medTxt.setText(""+med); td=(sss+tax)+med; tdTxt.setText(""+td); if(bon>=20000) { bon=(gp)(0.5); bonTxt.setText(""+bon); } if(bon<20000) { bon=(gp)(0.3); bonTxt.setText(""+bon); } np=(gp-td)+bon; npLbl.setText("Net Pay of " +fn+ " " +ln+ " is " +np); } if(arg=="RESET") { lnTxt.setText(" "); fnTxt.setText(" "); miTxt.setText(" "); posTxt.setText(" "); hrsTxt.setText(" "); rateTxt.setText(" "); gpTxt.setText(" "); sssTxt.setText(" "); taxTxt.setText(" "); medTxt.setText(" "); tdTxt.setText(" "); bonTxt.setText(" "); npLbl.setText("Net Pay of:"); } } } thanks for your help!!!
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