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Thread: Call method(s) within the same class

  1. #1
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    Default Call method(s) within the same class

    I am new to programming and Java. I am trying to make 3 methods. One gets the largest number, one gets the middle, and the last gets the smallest. I do not think I created them correctly. I am getting a compiler error in Jgrasp saying illegal start to expression for
    each method. Then how do I call them? Here is my code:
    import java.util.*;
     
    public class Ch4_PrExercise2
    {
    	public static void main(String [] args)
    	{
    		Scanner console = new Scanner(System.in);
     
    		int num1, num2, num3;
     
    		System.out.println("Please input 3 numbers separated by spaces: ");
    		System.out.println();
     
    		num1 = console.nextInt();
    		num2 = console.nextInt();
    		num3 = console.nextInt();
     
     
     
    			public int largest()
    			{
    				if(num1 > num2 && num1 > num3)			
    					return num1;			
    				else if(num2 > num1 && num2 > num3)			
    					return num2;				
    				else if(num3 > num1 && num3 > num2)
    					return num3;
    			}						
     
     
     
    			public int smallest()
    			{
    				if(num1 < num2 && num1 < num3)
    					return num1;
    				else if(num2 < num1 && num2 < num3)
    					return num2;
    				else if(num3 < num1 && num3 < num2)
    					return num3;
    		   }
     
    			 public int middle()
    			 {
     
    				if((num1 < num2 && num1 >num3) || (num1 > num2 && num1 < num3))
    					return num1;
    				else if((num2 > num1 && num2 < num3) || (num2 < num1 && num2 >num3))
    					return num2;
    				else if((num3 > num2 && num3 < num1) || (num3 < num2 && num3 > num1))
    					return num3;
    			 }
     
     
    		System.out.println("Your numbers in nondescending order are: " + " " + smallest() + " " + middle() + " " largest());		
     
     
    	}
    }
    thanks in advance


  2. #2
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    Default Re: Call method(s) within the same class

    try this:


    import java.util.*;
     
    	public class TestIf
    	{
    		public static void main(String [] args)
    		{
    			Scanner console = new Scanner(System.in);
     
    			int num1, num2, num3, smallest, largest, middle;
     
    			System.out.println("Please input 3 numbers separated by spaces: ");
    			System.out.println();
     
    			num1 = console.nextInt();
    			num2 = console.nextInt();
    			num3 = console.nextInt();
     
    			smallest= smallest(num1, num2, num3);
    			largest= largest(num1, num2, num3);
    			middle= middle(num1, num2, num3);
     
     
    			System.out.println("Your numbers in nondescending order are: " + " " + smallest + " " + middle + " " + largest);		
     
     
    		}
     
     
     
    				public static int largest(int num1, int num2, int num3)
    				{
    					if(num1 > num2 && num1 > num3)			
    						return  num1;			
    					else if(num2 > num1 && num2 > num3)			
    						return num2;				
    					else if(num3 > num1 && num3 > num2)
    						return num3;
    					return 0;
    				}						
     
     
     
    				public static int smallest(int num1, int num2, int num3)
    				{
    					if(num1 < num2 && num1 < num3)
    						return num1;
    					else if(num2 < num1 && num2 < num3)
    						return num2;
    					else if(num3 < num1 && num3 < num2)
    						return num3;
    					return 0;
    			   }
     
    				 public static int middle(int num1, int num2, int num3)
    				 {
     
    					if((num1 < num2 && num1 >num3) || (num1 > num2 && num1 < num3))
    						return num1;
    					else if((num2 > num1 && num2 < num3) || (num2 < num1 && num2 >num3))
    						return num2;
    					else if((num3 > num2 && num3 < num1) || (num3 < num2 && num3 > num1))
    						return num3;
    					return 0;
    				 }
     
     
     
    	}
    Last edited by helloworld922; September 19th, 2011 at 12:15 AM.

  3. #3
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    Default Re: Call method(s) within the same class

    Let me know if it works

  4. #4
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    Default Re: Call method(s) within the same class

    actually it didn't
    here's the compiler errors I got:


    ----jGRASP exec: javac -g Ch4_PrExercise2.java

    Ch4_PrExercise2.java:27: error: illegal start of expression
    public static int largest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:27: error: illegal start of expression
    public static int largest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:27: error: ';' expected
    public static int largest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:27: error: '.class' expected
    public static int largest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:27: error: ';' expected
    public static int largest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:27: error: <identifier> expected
    public static int largest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:27: error: not a statement
    public static int largest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:27: error: ';' expected
    public static int largest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:40: error: illegal start of expression
    public static int smallest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:40: error: illegal start of expression
    public static int smallest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:40: error: ';' expected
    public static int smallest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:40: error: '.class' expected
    public static int smallest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:40: error: ';' expected
    public static int smallest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:40: error: <identifier> expected
    public static int smallest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:40: error: not a statement
    public static int smallest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:40: error: ';' expected
    public static int smallest(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:51: error: not a statement
    publicstatic int middle(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:51: error: ';' expected
    publicstatic int middle(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:51: error: ';' expected
    publicstatic int middle(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:51: error: <identifier> expected
    publicstatic int middle(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:51: error: not a statement
    publicstatic int middle(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:51: error: ';' expected
    publicstatic int middle(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:51: error: ';' expected
    publicstatic int middle(int num1, int num2, int num3)
    ^
    Ch4_PrExercise2.java:64: error: ')' expected
    System.out.println("Your numbers in nondescending order are: " + " " + smallest + " " + middle + " " largest);
    ^
    Ch4_PrExercise2.java:64: error: illegal start of expression
    System.out.println("Your numbers in nondescending order are: " + " " + smallest + " " + middle + " " largest);
    ^
    25 errors

    ----jGRASP wedge2: exit code for process is 1.
    ----jGRASP: operation complete.

  5. #5
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    Default Re: Call method(s) within the same class

    Did you make sure to change the class name back? I changed it so it would work in my project

  6. The Following User Says Thank You to Bertorox For This Useful Post:

    mwr76 (September 19th, 2011)

  7. #6
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    Default Re: Call method(s) within the same class

    yes I did change it back

  8. #7
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    Default Re: Call method(s) within the same class

    I am an idiot, it works fine.
    2 typos cause all those errors.
    thank you!

  9. #8
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    Default Re: Call method(s) within the same class

    Haha don't worry about it. Happens to everyone. Glad I could help

  10. #9
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    Default Re: Call method(s) within the same class

    Bertorox, it's good that you helped him, but next time better not feed spoon. You must stick with the forum rules.
    Thanks

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