When submitting this code I get the following error: Compile errors:

Test.java:7: error: constructor PGM in class PGM cannot be applied to given types; PGM pg = new PGM(); ^ required: String found: no arguments reason: actual and formal argument lists differ in length 1 error 

can someon help? The code is below

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.util.Scanner;

public class PGM extends Image

{

private int maxColor;

private int[][] image;

public PGM(String file) throws IOException

{

FileReader fr = new FileReader(file);

Scanner sc = new Scanner(fr);

setMagic(sc.nextLine());

setWidth(sc.nextInt());

setHeight(sc.nextInt());

maxColor = sc.nextInt();

image = new int[getHeight()][getWidth()];

for(int i = 0; i < getHeight(); i++)

{

for(int j = 0; j < getWidth(); j++)

{

image[i][j] = sc.nextInt();

}

}

sc.close();

fr.close();

}

public String getMagic() {

return magic;

}

public void setMagic(String magic) {

this.magic = magic;

}

public int getWidth() {

return width;

}

public void setWidth(int width) {

this.width = width;

}

public int getHeight() {

return height;

}

public void setHeight(int height) {

this.height = height;

}

public int getDepth() {

return depth;

}

public void setDepth(int depth) {

this.depth = depth;

}

@Override

public void flip_horizontally() {

for(int i = 0; i < getHeight(); i++)

{

for(int j = 0; j < getWidth()/2; j++)

{

int temp = image[i][j];

image[i][j] = image[i][getWidth() - 1 -j];

image[i][getWidth() - 1 -j] = temp;

}

}

}

@Override

public void flip_vertically() {

// TODO Auto-generated method stub

for(int i = 0; i < getHeight()/2; i++)

{

for(int j = 0; j < getWidth(); j++)

{

int temp = image[i][j];

image[i][j] = image[getHeight() - 1 -i][j];

image[getHeight() - 1 -i][j] = temp;

}

}

}

@Override

public void rotate_right_90() {

int [][] tempImage = new int[getWidth()][getHeight()];

final int M = getWidth();

final int N = getHeight();

for (int r = 0; r < M; r++) {

for (int c = 0; c < N; c++) {

tempImage[c][M-1-r] = tempImage[r][c];

}

}

image = tempImage;

setWidth(N);

setHeight(M);;

}

public void save(String file) throws IOException

{

FileWriter fw = new FileWriter(file);

fw.write(getMagic() + " ");

fw.write(getWidth() + " " + getHeight() + " ");

fw.write(maxColor + " ");

for(int i = 0; i < getHeight(); i++)

{

for(int j = 0; j < getWidth(); j++)

{

fw.write(image[i][j] + " ");

}

fw.write(" ");

}

fw.close();

}

}