Print a prism in Java

 Public classTest { Public Static voidMain (string[] args) {//number of input linesPrint (5); }    Public Static voidPrintintsum) {       intNumber=0;  for(inti=1;i<=sum;i++)       {           intEmptynumber=sum-i;//calculate the number of spaces calculated as total rows-Number of lines           intStarnumber=2*i-1;//Calculates the number of stars, calculated as twice times the number of rows-1           if(i==sum) { number=i+starnumber;//save a total for the back of the inverted output with           }            for(intz=0;z<emptynumber;z++)//traverse the output to get a triangle{System.out.print (" "); }            for(intj = 0; J < Starnumber; J + +) {System.out.print ("*");       } System.out.println (); }       //start outputting the following section       intnewrow=sum+1;//calculate the number of lines to start       intSumrow=2*sum-1;//calculate new Total rows        for(inti=newrow;i<=sumrow;i++)       {           intEmptynumber=i-sum;//Calculates the number of spaces, calculated as the current number of rows-the old row count//Calculates the number of stars, the number of stars + spaces + The number of rows =number, which is the maximum number of triangles + its number of rows           intstarnumber=number-i-Emptynumber; //Traverse Output            for(intz=0;z<emptynumber;z++) {System.out.print (" "); }            for(intj = 0; J < Starnumber; J + +) {System.out.print ("*");       } System.out.println (); }            }     }   

Result diagram:

Print a prism in Java