Why am I receiving errors on Java array assignment? [duplicate]

问题

This question already has answers here:

error: illegal start of type (3 answers)

Closed 5 years ago.

I am trying to assign int literals to certian indexs of the array. I keep getting errors from the compiler. This article seems to suggest That I have done this correctly. Here is the code:

public class Mytest {
    int[] jim = new int[9];
    jim[0] = 77;
}

Compiler Errors:

Mytest.java:5: error: ']' expected
    jim[0] = 77;
        ^
Mytest.java:5: error: ';' expected
    jim[0] = 77;
         ^
Mytest.java:5: error: illegal start of type
    jim[0] = 77;
           ^
Mytest.java:5: error: <identifier> expected
    jim[0] = 77;
            ^

Thanks in advance.

回答1:

You need to move your assignment statement to a valid location. This could be a method, a constructor, or an initialization block.

public class Mytest {
    int[] jim = new int[9];
    // Using an initialization block
    {
        jim[0] = 77;
    }
}

回答2:

You have to put them into a method or into a constructor, which is a 'special' method.

You have to put those lines inside your main method, if 'Mytest' is your main class, or in any other method you create for that, inside that class.

来源：https://stackoverflow.com/questions/28594656/why-am-i-receiving-errors-on-java-array-assignment