Java:prg suivant me donne aucun output - Page 2

    void HighestMarks()
        {
         for(int j=0;j<RollNo;j++)
         {
          max=0;
          for(int i=0;i<3;i++)
          {
           if(RollNo>max)
            max1=RollNo;
          }
          System.out.println("highest marks is:"+max1);
         }
       
         System.out.println("*******Highest marks in each subject with roll 

 void HighestMarks()
	    {
	    		max=0;
	    		for(int i=0;i<3;i++)
	    		{
	    			if(sub1>sub2)
	    				max=sub1;
	    			else
	    				max=sub2;
	    			if (sub2>sub3)
	    				max=sub2;
	    			else
	    				max=sub3;	
	    		}
	    		System.out.println("highest marks RollNo "+RollNo+" is "+max);
	    }
	    

void StudHighestMarks()
	    {
	    	
	    	for(int i=0;i<RollNo;i++)
	    	{
	    		if(TotalMarks>max1)//à cette ligne j'hésite,donnez moi idée 	
	    		{
	    			max1=tmp;		
	    			System.out.println(tmp);
	    		}
	    	}
	    }

void StudHighestMarks()
	    {
	    	max=0;
	    	for(int j=0;j<RollNo;j++)
	    	{
	    		if (TotalMarks >max) 
	    	      {
	    	        max = TotalMarks;
	    	      }
	    		else
	    			min=(int) TotalMarks;

	    	      
	    	      System.out.println("highest marks RollNo is "+max);
	    	 }

	    	}