Java Program To Print Prime Number Till N - Java Program Example

 Program to display first n prime numbers

package com.androidpro.in;




import
java.util.*;

public class
Main {

   
public static void main(String args[])
    {
       
int n;
        int
status = 1;
        int
num = 3;
       
//For capturing the value of n
       
Scanner scanner = new Scanner(System.in);
       
System.out.println("Enter the value of n:");
       
//The entered value is stored in the var n
       
n = scanner.nextInt();
        if
(n >= 1)
        {
            System.
out.println("First "+n+" prime numbers are:");
            
//2 is a known prime number
           
System.out.println(2);
       
}

       
for ( int i = 2 ; i <=n ;  )
        {
           
for ( int j = 2 ; j <= Math.sqrt(num) ; j++ )
            {
               
if ( num%j == 0 )
                {
                    status =
0;
                    break;
               
}
            }
           
if ( status != 0 )
            {
                System.
out.println(num);
               
i++;
           
}
            status =
1;
           
num++;
        
}
    }

}

 

Output


Enter the value of n:

89

First 89 prime numbers are:

2

3

5

7

11

13

17

19

23

29

31

37

41

43

47

53

59

61

67

71

73

79

83

89

97

101

103

107

109

113

127

131

137

139

149

151

157

163

167

173

179

181

191

193

197

199

211

223

227

229

233

239

241

251

257

263

269

271

277

281

283

293

307

311

313

317

331

337

347

349

353

359

367

373

379

383

389

397

401

409

419

421

431

433

439

443

449

457

461

 

Process finished with exit code 0

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