Error: incompatible types: Integer cannot be converted to Integer[]

Question

I'm attempting to create a method that will return an index within an array.

private static Integer[] day1 = new Integer[6];

public Integer[] getDay1(Integer team) {
      return day1[team];
}

When I try to do this, however, it highlights the opening bracket following day1 with this error.

Days.java:32: error: incompatible types: Integer cannot be converted to Integer[]
  return day1[team];
             ^

Any idea why this is? Any help would be appreciated

Because you're not returning an array of Integers, you're returning a single Integer from the array. — Sami Kuhmonen
– Sami Kuhmonen, Commented Apr 26, 2015 at 20:00

Kristof · Accepted Answer · 2015-04-26 20:00:22Z

2

return day1[team]; will return the teamth value of your array. However the return type of your method is Integer[] (array). Change your method to:

public Integer getDay1(Integer team) {
      return day1[team];
}

answered Apr 26, 2015 at 20:00

Kristof

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3 Comments

svarog Over a year ago

beat me to it by 7 seconds :)

Clyde Gustafson Over a year ago

Mentally kicking myself for not seeing this.

svarog Over a year ago

the exception actually told you what's wrong in your code :)

svarog · Accepted Answer · 2015-04-26 20:00:29Z

1

you are returning an Integer when you have defined your method to return an array or integers, either change to

public Integer getDay1(Integer team) {
  return day1[team];
}

or

public Integer[] getDay1(Integer team) {
  return day1;
}

answered Apr 26, 2015 at 20:00

svarog

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Comments

Marvin · Accepted Answer · 2015-04-26 20:00:57Z

1

Integer is one integer value, Integer[] is an array of single Integers. The signature of your getDay1 method promises an array as return value, but you are actually returning one single element (the one at position team).

I assume you are looking for

public Integer getDay1(Integer team) {
      return day1[team];
}

answered Apr 26, 2015 at 20:00

Marvin

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