Uknown 형식 변환 예외 오류가 발생 했습니까?

Question

테이블을 만들려고합니다. 숫자가 왼쪽에 맞춰지기를 바란다. 포맷팅을 처음 사용하는 이유는 무엇입니까? 여기

public class Prog122h 
{ 
    public static void main (String[] args) 
    { 
     System.out.println("Number  Square  Square Root  Cube  4th Root"); // heading 

     for (int number = 1; number <= 20; number++) // repeats finding the square and square root of the number until 40. increments number by 1 
     { 
     //finds square using math class 
     int square= (int) Math.pow(number, 2); 

     // finds square root of the number using math class 
     double squareRoot= (Math.sqrt(number)); 

     squareRoot= Math.round (squareRoot* 10000.0)/10000.0; 

     //finds the cube of the number 
     int cube= (int) Math.pow(number, 3); 

     //finds the 4th root of the number 
     double fourthRoot= Math.pow(number, 1.0/4); 
     fourthRoot= Math.round (fourthRoot* 10000.0)/10000.0; 

     //output of table 
     System.out.format("%-, "+number+"   %-, "+square+"   %-, "+squareRoot+"  %-, " +cube+"  %-, "+fourthRoot); 

     } 
    } 
} 

Answer 1

당신이 이동 :

public class Prog122h { 
    public static void main(String[] args) { 
     System.out.format("%-10s%-10s%-10s%-10s%-10s", "Number", "Square", "Square", "Root Cube", "4th Root"); // heading 

     for (int number = 1; number <= 20; number++) // repeats finding the square and square root of the number until 40. increments number by 1 
     { 
      // finds square using math class 
      int square = (int) Math.pow(number, 2); 

      // finds square root of the number using math class 
      double squareRoot = (Math.sqrt(number)); 

      squareRoot = Math.round(squareRoot * 10000.0)/10000.0; 

      // finds the cube of the number 
      int cube = (int) Math.pow(number, 3); 

      // finds the 4th root of the number 
      double fourthRoot = Math.pow(number, 1.0/4); 
      fourthRoot = Math.round(fourthRoot * 10000.0)/10000.0; 

      // output of table 
      System.out.format("\n%-10s%-10s%-10s%-10s%-10s", number, square, squareRoot, cube, fourthRoot, fourthRoot); 

     } 
    } 
} 

PrintStream.format()는 가변 기능, 그것은 하나에 여러 인수를하지합니다!