Question

I am very new to java and coding altogether, and I haven’t figured out how to create a new file for my client class.

This is my error:

class TestRectangle is public, should be declared in a file named TestRectangle.java

public class TestRectangle {

Here’s my first class:

public class Rectangle1 {

Here’s where the error occurs:

public class TestRectangle {
    public static void main(String[] args) {

Answer 1

Java requires that you only have one public class per a file. you have two options, either make two seperate files called Rectangle1.java and TestRectangle1.java or make your Rectangle1 with default access modifier and name your file as TestRectangle.java

Option1:

put the Rectange1 in a seperate file (Rectangle1.java) from TestRectangle

public class Rectangle1
{
}

now, make a seperate file called (TestRectangle.java)

public class TestRectangle {
    public static void main(String[] args) {

Option2:

Save this file as TestRectangle.java

   public class TestRectangle {
        public static void main(String[] args) {
    }

     class Rectangle1 //observe that the access modifier is default(no-modifier) 
    {
    }