6
में" गैर-समाप्ति दशमलव विस्तार; कोई सटीक प्रतिनिधित्व करने योग्य दशमलव परिणाम "यह" सकारात्मक अनुचित एकीकरण "या" नकारात्मक अनुचित एकीकरण "चुनने पर मुझे त्रुटि देता है त्रुटि थ्रेड में अपवाद है" मुख्य "java.lang.ArithmeticException: गैर-समाप्ति दशमलव विस्तार; कोई सटीक प्रतिनिधित्व करने योग्य दशमलव परिणाम नहीं।जावा रन-टाइम त्रुटि "बिगडिसीमल क्लास
at java.math.BigDecimal.divide(BigDecimal.java:1603)
at SE_Project_2.calculate(SE_Project_2.java:55)
at SE_Project_2.main(SE_Project_2.java:45)
कोड:
import java.math.BigDecimal;
import javax.swing.JOptionPane;
public class SE_Project_2 {
private static BigDecimal C0 = new BigDecimal("0.1713245");
private static BigDecimal C1 = new BigDecimal("0.3607616");
private static BigDecimal C2 = new BigDecimal("0.4679139");
private static BigDecimal C3 = new BigDecimal("0.4679139");
private static BigDecimal C4 = new BigDecimal("0.3607616");
private static BigDecimal C5 = new BigDecimal("0.1713245");
private static BigDecimal X0 = new BigDecimal("-0.932469514");
private static BigDecimal X1 = new BigDecimal("-0.661209386");
private static BigDecimal X2 = new BigDecimal("-0.238619186");
private static BigDecimal X3 = new BigDecimal("0.238619186");
private static BigDecimal X4 = new BigDecimal("0.661209386");
private static BigDecimal X5 = new BigDecimal("0.932469514");
private static BigDecimal a=new BigDecimal("0"),b=new BigDecimal("0");
private static int y;
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
try{
String[] o = {"Positive improper integration","Negative improper integration","Normal integration"};
y = JOptionPane.showOptionDialog(null,"Welcome to my program! \nYahya Al-Buluwi\nIt can work for big decimal numbers.\n\nThis program will find the integral of: \nf(x)= 5x + 3 dx\nBy using the 6-points Gauss Legendre Quadrature formulae.\n\n What choise is prefered to you?","Welcome",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.QUESTION_MESSAGE,null,o,o[2]);
BigDecimal sum = null;
if (y==2){
a = new BigDecimal((String)JOptionPane.showInputDialog(null,"Enter the value of a:","Enter the value of a", JOptionPane.QUESTION_MESSAGE));
b = new BigDecimal((String)JOptionPane.showInputDialog(null,"Enter the value of b:","Enter the value of b", JOptionPane.QUESTION_MESSAGE));
}
sum = calculate(X0,C0).add(calculate(X1,C1).add(calculate(X2,C2)).add(calculate(X3,C3).add(calculate(X4,C4).add(calculate(X5,C5)))));
System.out.println("y=" + y);
JOptionPane.showMessageDialog(null,"The 6-points Gauss Legendre Quadrature formulae solution according to \na= " + a+"\nb= "+b+" \nis: "+ sum,"Result",JOptionPane.INFORMATION_MESSAGE);
}catch(Exception e){
JOptionPane.showMessageDialog(null,"Ooops! an error has occured! the program will be terminated.","Error",JOptionPane.ERROR_MESSAGE);
calculate(X0,C0).add(calculate(X1,C1).add(calculate(X2,C2)).add(calculate(X3,C3).add(calculate(X4,C4).add(calculate(X5,C5)))));
System.out.println("y=" + y);
JOptionPane.showMessageDialog(null,"The 6-points Gauss Legendre Quadrature formulae solution according to \na= " + a+"\nb= "+b+" \nis: "+ calculate(X0,C0).add(calculate(X1,C1).add(calculate(X2,C2)).add(calculate(X3,C3).add(calculate(X4,C4).add(calculate(X5,C5))))),"Result",JOptionPane.INFORMATION_MESSAGE);
}
}
public static BigDecimal calculate(BigDecimal x, BigDecimal c){
BigDecimal h = x.multiply(new BigDecimal("0.5"));
if(y==0){
// PI= (1/(.5x)**2)*((5/(.5+.5x))+3)
return (((new BigDecimal("1")).divide(h.pow(2))).multiply((new BigDecimal("3")).add((new BigDecimal("5")).divide((new BigDecimal("0.5")).add(h)))));
}
if(y==1){
// NI= (1/(-.5x)**2)*((5/(-.5-.5x))+3)
return ((new BigDecimal("1").divide((h.negate()).pow(2))).multiply(new BigDecimal("3").add(new BigDecimal("5").divide(new BigDecimal("-0.5").add(h.negate())))));
}
BigDecimal sum = (b.add(a)).divide(new BigDecimal("2"));
BigDecimal diff =(b.add(a.negate())).divide(new BigDecimal("2"));
return c.multiply(diff.multiply((((diff.multiply(x)).add(sum)).multiply(new BigDecimal("5"))).add(new BigDecimal("3"))));
}
}
यह किसी चीज के लिए बहुत जटिल कोड है जो शायद अधिक आसानी से दिखाया जा सकता है। एक बहुत ही सरल उदाहरण प्रदान करने की देखभाल ... और इसके साथ जाने के लिए एक वास्तविक * प्रश्न *? –