Problem #$1$

public static void pyramidInFile$($int num, String fileName$)$ throws IOException, IllegalArgumentException

What to do

In the TwoMethods.java file

Work on the pyramidInFile$()$ method$$

Goal

In the method

outputs a pyramid pattern of any given size into a file with a given name

See the samples below in the section$$

Method calls and patterns they produceEven and odd sized patterns are differentThe method takes two parameters

Pattern size as an integerFile name as a String that specifies the name of the file to output the pyramid into

The method must handle $2$ types of Exceptions

IllegalArgumentExceptionIOExceptionBoth exceptions$$

are listed in the Throws Clause as part of the method's signatureNeither Exception is caught in the method but are instead thrown

The$$IllegalArgumentException is thrown by your code by the throw statement

when the value of parameter size is negative or a $0$

The IOException is not thrown by your code

but instead, will naturally propagate into the calling code without you programming the throw statement

It may be helpful to see examples of how Exceptions are handled by these methods provided in the code

buildTestFile$()$areEqualFiles$()$

Approach

Code in the pyramidInFile method$()$ of the TwoMethods.java file

Note

that testing naturally occurs during development as

the main$()$ method calls the testPyramidInFile$()$ method which

then calls your pyramidInFile$()$ method

comment out the call to the method testFactorsOfTwoInFile$()$ in the main$()$ method

unless you have the factorsOfTwoInFile$()$ method already working

When you feel comfortable with the testing done in the submit directory

copy TwoMethods.java to the Test Directory to do formal testingunless you have the testFactorsOfTwoInFile$()$ method working in the TwoMethods.java file

In TestAll.java

comment out the call to the method

testFactorsOfTwoInFile$($out$)$;

Coding constructs to consider

if statement

throw statement

PrintWriter based on a file

For Loops $($possibly nested$)$

Method calls and patterns they produce

Pattern of size $1$ written in file test$01.$txt

pyramidInFile$(1,$ "test$01.$txt$")$;

$*$

Pattern of size $2$ written in file test$02.$txt

pyramidInFile$(2,$ "test$02.$txt$")$;

$**$

Pattern of size $3$ written in file test$03.$txt

pyramidInFile$(3,$ "test$03.$txt$")$;

$-*-$

$***$

Pattern of size $4$ written in file test$04.$txt

pyramidInFile$(4,$ "test$04.$txt$")$;

$-**-$

$****$

Pattern of size $5$ written in file test$05.$txt

pyramidInFile$(5,$ "test$05.$txt$")$;

$--*--$

$-***-$

$*****$

Pattern of size $6$ written in file test$06.$txt

pyramidInFile$(6,$ "test$06.$txt$")$;

$--**--$

$-****-$

$******$

This is my code so far:

public static void pyramidInFile$($int num, String fileName$)$ throws IOException, IllegalArgumentException $\{$

if $($num $<=0)\{$

throw new IllegalArgumentException$("$Size must be positive."$)$;

$\}$

try $($PrintWriter writer $=$ new PrintWriter$($fileName$))\{$

for $($int i $=1$; i $<=$ num; i$++)\{$

$//$ Calculate number of hyphens and stars for the current row

int hyphens $=$ num $-$ i; $//$ Decreasing hyphens as we go down the rows

int stars $=2*$ i $-1$; $//$ Number of stars is $2*$i $-1$ for row i

$//$ Print leading hyphens

for $($int j $=0$; j $<$ hyphens; j$++)\{$

writer.print$("-")$;

$\}$

$//$ Print stars with a space between them

for $($int j $=0$; j $<$ stars; j$++)\{$

writer.print$("*")$;

if $($j $!=$ stars $-1)\{//$ Avoid extra space after the last star

writer.print$("")$;

$\}$

$\}$

$//$ Print trailing hyphens $($same number as leading hyphens$)$

for $($int j $=0$; j $<$ hyphens; j$++)\{$

writer.print$("-")$;

$\}$

$//$ Move to the next line after each row

writer.println$()$;

$\}$

$\}$

$\}$

But when it gets tested this is the results:

$---$pyramidInFile$()$ Tests$------------------------------------------------------------$

pyramidInFile$()$ TEST $01-$ pattern of size $1$ PASSED

pyramidInFile$()$ TEST $02-$ pattern of size $2$ FAILED

pyramidInFile$()$ TEST $03-$ pattern of size $3$ FAILED

pyramidInFile$()$ TEST $04-$ pattern of size $4$ FAILED

pyramidInFile$()$ TEST $05-$ pattern of size $5$ FAILED

pyramidInFile$()$ TEST $06-$ pattern of size $8$ FAILED

pyramidInFile$()$ TEST $07-$ IllegalArgumentException, negative parameter PASSED

pyramidInFile$()$ TEST $08-$ IOException PASSED

I don't understand what I$\text{'}$m doing wrong.