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/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String[] SUPPORTED_CONTRACT_TYPES = {"a"};
		boolean result = Arrays.stream(SUPPORTED_CONTRACT_TYPES).anyMatch(null::equals);
		System.out.println(result);
		// your code goes here
	}
}

Main.java:13: error: invalid method reference
		boolean result = Arrays.stream(SUPPORTED_CONTRACT_TYPES).anyMatch(null::equals);
		                                                                  ^
  cannot find symbol
    symbol:   method equals()
    location: class <null>
1 error

Standard output is empty