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import java.util.Scanner;
public class avg {
       public void main(String args[])
       {
    	   Scanner obj1=new Scanner(System.in);
    			   int Sum=0,i,marks=0;
    	   while(i<10)
    	   {
    		   System.out.println("Enter the %d",+i ,"th subject marks");
    		   marks=obj1.nextInt();
    		   Sum+=marks;
    		   i++;
 
    	   }
    	   double avg=Sum/10;
    	   System.out.println("The avg is",+avg);
 
       }
}
 

Main.java:2: error: class avg is public, should be declared in a file named avg.java
public class avg {
       ^
Main.java:9: error: no suitable method found for println(String,int,String)
    		   System.out.println("Enter the %d",+i ,"th subject marks");
    		             ^
    method PrintStream.println() is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(boolean) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(char) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(int) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(long) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(float) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(double) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(char[]) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(String) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(Object) is not applicable
      (actual and formal argument lists differ in length)
Main.java:16: error: no suitable method found for println(String,double)
    	   System.out.println("The avg is",+avg);
    	             ^
    method PrintStream.println() is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(boolean) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(char) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(int) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(long) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(float) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(double) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(char[]) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(String) is not applicable
      (actual and formal argument lists differ in length)
    method PrintStream.println(Object) is not applicable
      (actual and formal argument lists differ in length)
3 errors

Standard output is empty