Change variable and re write

Question

can enyone change this variable and rewrite this program????
public class CommonBirthdays
public static void main(String args[])
int NumberOfTrials=1000;
int NumberOfStudent=40;
int birthdays=0;
int b[]=new int[NumberOfStudent];
for(int a=0; a < NumberOfTrials; a++)
for(int i=0; i < NumberOfStudent; i++)
b=(int)Math.floor((Math.random() * 365.0) + 1);
for(int i=0; i < b.length; i++)
boolean common=false;
for(int j=i+1; j<b.length; j++)
if(b[i]==b[j])
common=true;
if(common)
birthdays++;
break;
double probability=((double)birthdays/((double)NumberOfTrials))*100;
System.out.println("The total number of trials made : "+NumberOfTrials + "\n");
System.out.println("The amount of same birthdays : " birthdays "\n");
System.out.println("The probability of same birthday in a class is : " + probability + "%");

Answer 1

here you are, [all] variable[s] changed...
public class CommonBirthdays {
  public static void main(String args[]) {
    int a=1000;
    int b=40;
    int c=0;
    int d[]=new int;
for(int e=0; e < a; e++) {
for(int f=0; f < b; f++)
d[f]=(int)Math.floor((Math.random() * 365.0) + 1);
for(int f=0; f < d.length; f++) {
boolean g=false;
for(int h=f+1; h<d.length; h++)
if(d[f]==d[h])
g=true;
if(g) {
c++;
break;
double i=((double)c/((double)a))*100;
System.out.println("The total number of trials made : "+a + "\n");
System.out.println("The amount of same birthdays : " c "\n");
System.out.println("The probability of same birthday in a class is : " + i + "%");