java - Pascal's triangle without using arrays (only loops) -

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i trying output pascal's triangle asterisks (*). code:

public static void main(string [] arg) {     int n=3;     for(int i=0;i<n;i++)     {         for(int j=0;j<n-i;j++)         {             system.out.print(" ");         }         boolean b=true;         for(int k=0;k<i*2+1;k++)         {             if(b)             {                 system.out.print("*");                 b=false;             }             else             {                 system.out.print(" ");                 b=true;             }          }     }     system.out.println(" "); } }

i have rechecked several times , failed find error. let me know whether if-block implemented correctly. following code not giving required output below: 

     *      *   *   *    *    *

your system.out.println() statement outside of loop instead of inside.

    (int = 0; < n; i++) {         (int j = 0; j < n - i; j++) {             system.out.print(" ");         }         boolean b = true;         (int k = 0; k < * 2 + 1; k++) {             if (b) {                 system.out.print("*");                 b = false;             } else {                 system.out.print(" ");                 b = true;             }         }     }     system.out.println(" "); // called once      // output     //   *  * * * * *

just move inside close brace , program work.

    (int = 0; < n; i++) {         (int j = 0; j < n - i; j++) {             system.out.print(" ");         }         boolean b = true;         (int k = 0; k < * 2 + 1; k++) {             if (b) {                 system.out.print("*");                 b = false;             } else {                 system.out.print(" ");                 b = true;             }         }         system.out.println(" "); // called once each iteration     }      // output     //   *      //  * *      // * * *

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