Java Program - Find Largest Number among three Numbers


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Three numbers $$x$$, $$y$$ and $$z$$ are given and the largest number among these three numbers can be found out using below methods.

Example: Using If statement

In the below example, only if conditional statements are used.

public class MyClass {
  static void largest(int x, int y, int z) {
    int max = x;
    if (x >= y && x >= z)
      {max = x;}
    if (y >= x && y >= z)
      {max = y;}
    if (z >= x && z >= y)
      {max = z;}
    System.out.println("largest number among " + x + ", " + y + " and " + z + " is: " + max);
  }

  public static void main(String[] args) {
    largest(100, 50, 25);
    largest(50, 50, 25);
  }
}

Output

largest number among 100 , 50 and 25 is:  100
largest number among 50 , 50 and 25 is:  50

Example: Using If-else statement

It can also be solved using If-else conditional statements.

public class MyClass {
  static void largest(int x, int y, int z) {
    int max = x;
    if (x >= y && x >= z)
      {max = x;}
    else if (y >= x && y >= z)
      {max = y;}
    else 
      {max = z;}
    System.out.println("largest number among " + x + ", " + y + " and " + z + " is: " + max);
  }

  public static void main(String[] args) {
    largest(100, 50, 25);
    largest(50, 50, 25);
  }
}

Output

largest number among 100 , 50 and 25 is:  100
largest number among 50 , 50 and 25 is:  50

Example: Using Nested If-else statement

The above problem can also be solved using nested if-else conditional statements.

public class MyClass {
  static void largest(int x, int y, int z) {
    int max = x;
    if (x >= y)
      {
        if(x >= z) 
          {max = x;}
        else
          {max = z;}
      }
    else
      {
        if(y >= z) 
          {max = y;}
        else
          {max = z;}
      }
    System.out.println("largest number among " + x + ", " + y + " and " + z + " is: " + max);
  }

  public static void main(String[] args) {
    largest(100, 50, 25);
    largest(50, 50, 25);
  }
}

Output

largest number among 100 , 50 and 25 is:  100
largest number among 50 , 50 and 25 is:  50

Example: Using ternary operator

The ternary operator can also be used here.

public class MyClass {
  static void largest(int x, int y, int z) {
    int max = x;
    max = (x > y)? ((x > z)? x : z) : ((y > z)? y : z);
    System.out.println("largest number among " + x + ", " + y + " and " + z + " is: " + max);
  }

  public static void main(String[] args) {
    largest(100, 50, 25);
    largest(50, 50, 25);
  }
}

Output

largest number among 100 , 50 and 25 is:  100
largest number among 50 , 50 and 25 is:  50



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