コードで何が問題になっているのかを理解し、素数の計算と素数で何が起こっているのかを理解したいと思いますJFrame。
- どういうわけか、1 から 100 までの素数だけを言っていた計算は
- を取り出したので、
system.exit(0);終了する前にすべての数字をクリックする必要があります。私が達成したかったのは、1 から 100 までのすべての素数をリストした 1 つのリストを取得することでした。
- を取り出したので、
- 次に、コード化された素数の計算を使用して、 Prime Numbers を作成する必要があり
JFrameます。エラーが多すぎます。これが最初の問題であり、次に、エラーのためにプロジェクトを実行して確認することができません。
素数計算と私のJFrame. 何が起こっているか/間違っているかを理解する助けがあれば大歓迎です.
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//Prime Numbers Java Swing JFrame
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import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class ProgrammingAssignment8 extends JFrame
implements ActionListener
{
//DECLARE BUT DO NOT INSTANTIATE
private JButton calculate;
private JButton clear;
private JButton exit;
//PANELS
private JPanel jpnlMain = new JPanel();
private JPanel jpnlTop = new JPanel();
private JPanel jpnlCenter = new JPanel();
private JPanel jpnlBotton = new JPanel();
private JScrollPane scrollingResult;
//DECLARE JFRAME COMPONENTS
private JLabel jlblName, jlblMaxTest;
private JTextField jtfName, jtfMaxTest;
private JTextArea jtaName, jtaMaxNumbers;
private JButton jbutCalculate, jbutClear, jbutExit;
private CalculateButtonHandler calculateHandler;
private ClearButtonHandler clearHandler;
private ExitButtonHandler exitHandler;
/**
* @param args
*/
//CLASS CONSTRUCTOR
public ProgrammingAssignment8 (String sTitle)
{
//PREPARE THE JFRAME/WINDOW
super(sTitle);
//SET TITLE AND SIZE
setTitle(sTitle);
setSize(400,400);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//SET THE LAYOUT
jpnlMain.setLayout(new GridLayout(3,3,5,5));
//INSTANTIATE THE JBUTTONS WITH THE PASSED CAPTION AND COLOR AND ADD TO JPANEL
//PUT INTO A METHOD FOR EFFICIENCY AND TO AVOID REPEATING ALL THE CODE
jbtnCalculate = instantiateJButton("Calculate", Color.red);
jbtnClear = instantiateJButton("Clear", Color.blue);
jbtnExit = instantiateJButton("Exit", Color.black);
//INSTANTIATE THE JLABEL COMPONENTS
jlblName = new JLabel ("");
//PREPARE THE CONTAINER
Container ca = getContentPane();
}
set visible(true);
//END CONSTRUCTOR
private JButton instantiateJButton(String, sInCaption, Color inColor)
{
JButton jbtnButton = new JButton(sInCaption);
jbtnButton.setActionCommand(sInCaption);
jbtnButton.addActionListener(this);
jbtnButton.setForeground(inColor);
jbtnButton.setFont(fontChosenFont);
jpnlMain.add(jbutnButton);
return jbtnButton;
//END INSTANTIATE JBUTTON
//CLASS EVENT HANDLER
public void actionPerformed(java.awt.event.ActionEvent e)
{
//FIND OUT WHICH BUTTON WAS PRESSED BY USING THE ACTION COMMAND VALUE
String sActionCommand = e.getActionCommand();
//FROM THE ACTIONEVENT OBJECT, GET AN INSTANCE OF THE JBUTTON THAT WAS PRESSED
JButton jbtnSource = (JButton) e.getSource();
jbtnSource.setEnabled(false);
//LET THE USER KNOW WHAT BUTTON WAS CLICKED
JOptionPane.showMessageDialog(null, "You pressed the "" sActionCommand + " button", this.getTitle(), JOptionPane.INFORMATION_MESSAGE);
}
//END ACTIONPERFORMED (java.awt.event.ActionEvent e)
//EXECUTION STARTING POINT
public static void main(String[] args)
{
ProgrammingAssignment8 = new ProgrammingAssignment8("Instantiates with a Method");
}
//END main(String[] args)
}
//END ProgrammingAssignment8 CLASS
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PRIME NUMBERS CALCULATIONS
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import javax.swing.JOptionPane;
public class ProgrammingAssignment7
{
/**
* @param args
* @return
*/
public static void main(String[] args)
{
//Scanner Scan = new Scanner (System.in);
// TODO Auto-generated method stub
//DECLARE VARIABLES
int x = 1;
int i = 1;
int iNumber = 1;
boolean bNotPrime = false;
boolean bIsPrime = true;
int iNumberToTest;
int iPrimeCheck;
int iCounter;
int iResult = 1;
int iFact = 1;
int iLimit = 100;
String OutputStr = null;
System.out.println("Prime numbers between 1 and " + iLimit);
//loop through the numbers one by one
for(i=1; i < 100; i++)
{
bIsPrime = true;
//check to see if the number is prime
for(int j = 2; j < i ; j++){
if(i % j == 0){
bIsPrime = false;
break;
}
}
// print the number
if(bIsPrime)
OutputStr = "The Prime Numbers of 1 - 100 are: " + i + "\n";
JOptionPane.showMessageDialog(null, OutputStr, "PRIME NUMBERS", JOptionPane.INFORMATION_MESSAGE);
//System.out.print(i + "\n" );
//LISTS NUMBERS 1 THROUGH 100, INITIALIZE INTEGER NAMED I, IF IT IS LESS THAN OR EQUAL TO 100 THEN ADD ONE TO THE LOOP
/* for (int i=1; i<=100; i++)
{
System.out.println(i);
}
/* iNumber = 7;
for (iNumber = 1; iNumber <= 100; iNumber++)
iResult = iNumber / 1;
System.out.println(iResult);
/* for ( iNumber = 2; iNumber <= 100; iNumber++ )
{
if ( iNumber % iNumber == 0 )
{
bIsPrime = false;
break;
}
}
return bIsPrime;
}
*/
/* iNumber = 1;
while (iNumber < 100) iNumber++;
{
System.out.print(iNumber + " ");
System.out.println();
for (iNumber = iNumber - 1; iNumber > 2; iNumber++)
{ //divides the number by each number less than the number itself and also greater than 1 (because 1 is a factor of every number, and every number is a factor of itself)
if (iNumber % iNumber != 0)
System.out.println(iNumber + " is a prime number.");
{ //else if the number is evenly divisible by a number other than itself and 1 (we weeded out those cases in the above for statement), then it sets the boolean to be true, and breaks the for loop
bNotPrime = false;
iNumber = 1;
}
}
if (bIsPrime = true)
{ //if the number is not not a prime, then it prints the number and the for loop moves on
}
else if (bNotPrime = false)
{ //otherwise the for loop moves on
System.out.println(iNumber + " is not a prime number.");
*/
}
}
}