error: no suitable method found for println(String,float)? method PrintStream.println(float) is not-CodePudding

I was trying to print (int, boolean, char, double) in a same println statement .

import java.util.Scanner;

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

        Scanner input = new Scanner(System.in);

        float num1 = input.nextFloat();
        float num2 = input.nextFloat();
        float num3 = input.nextFloat();
        float num4 = input.nextFloat();

        if(num1 <= 0 && num2 <= 0 && num3 <= 0 && num4 <= 0){
            float equal = num1   num2   num3   num4;
            System.out.println("%.2f", equal);
        } else if(num1 <= 0 && num2 >= 0 && num3 <= 0 && num4 <= 0){
            float equal = num1   num3   num4;
            System.out.println("%.2f", equal);
        } else if(num1 <= 0 && num2 <= 0 && num3 >= 0 && num4 <= 0){
            float equal = num1   num2   num4;
            System.out.println("%.2f", equal);
        } else if(num1 <= 0 && num2 <= 0 && num3 <= 0 && num4 >= 0){
            float equal = num1   num2   num3;
            System.out.println("%.2f", equal);
        } else if(num1 <= 0 && num2 >= 0 && num3 >= 0 && num4 >= 0){
            float equal = num1;
            System.out.println("%.2f", equal);
        } else if(num1 >= 0 && num2 <= 0 && num3 >= 0 && num4 >= 0){
            float equal = num2;
            System.out.println("%.2f", equal);
        } else if(num1 >= 0 && num2 >= 0 && num3 <= 0 && num4 >= 0){
            float equal = num3;
            System.out.println("%.2f", equal);
        } else if(num1 >= 0 && num2 >= 0 && num3 >= 0 && num4 <= 0){
            float equal = num4;
            System.out.println("%.2f", equal);
        } else if(num1 <= 0 && num2 <= 0 && num3 >= 0 && num4 >= 0){
            float equal = num1   num2;
            System.out.println("%.2f", equal);
        } else if(num1 <= 0 && num2 >= 0 && num3 <= 0 && num4 >= 0){
            float equal = num1   num3;
            System.out.println("%.2f", equal);
        } else if(num1 <= 0 && num2 >= 0 && num3 >= 0 && num4 <= 0){
            float equal = num1   num4;
            System.out.println("%.2f", equal);
        } else if(num1 >= 0 && num2 <= 0 && num3 <= 0 && num4 >= 0){
            float equal = num2   num3;
            System.out.println("%.2f", equal);
        } else if(num1 >= 0 && num2 <= 0 && num3 >= 0 && num4 <= 0){
            float equal = num2   num4;
            System.out.println("%.2f", equal);
        } else if(num1 >= 0 && num2 >= 0 && num3 <= 0 && num4 <= 0){
            float equal = num3   num4;
            System.out.println("%.2f", equal);
        } else if(num1 >= 0 && num2 >= 0 && num3 >= 0 && num4 >= 0){
            float equal = 0.00;
            System.out.println("%.2f", equal);
        }
    }
}

I don't understand why this won't work. Please explain me this.

CodePudding user response：

The type of System.out is PrintStream. There are several overeloads of the method println(), but what they all have in common is that they take either no or a single parameter.

The method you are looking for - that takes a format string and multiple values to be inserted - is PrintStream.format():

public PrintStream format(String format, Object... args)

Writes a formatted string to this output stream using the specified format string and arguments.

CodePudding user response：

You can use System.out.printf instead of System.out.println, using the String %.2f before of the value that you want to print, as you already did in your code:

`
if(num1 <= 0 && num2 <= 0 && num3 <= 0 && num4 <= 0){
            float equal = num1   num2   num3   num4;
            System.out.printf("%.2f", equal);
        }
`