Description Stanislav Spiridonov 2015-10-27 02:06:47 EDT

Simple case:

3 classes: Base with Nonnull constructor, Complex extends Base and IdHolder that contains Nonnull static String.

package org.jresearch;

import javax.annotation.Nonnull;

public class IdHolder {

	@Nonnull
	public static final String ID = "id"; //$NON-NLS-1$

}



package org.jresearch;

import javax.annotation.Nonnull;

public class Base {

	@Nonnull
	private final String id;

	public Base(@Nonnull final String id) {
		this.id = id;
	}

	@Nonnull
	public String getId() {
		return id;
	}

}


package org.jresearch;

public class Complex extends Base {

	// @SuppressWarnings("all")
	// @SuppressWarnings("null")
	public Complex() {
		super(IdHolder.ID);
	}

}

In class Complex on the line super(IdHolder.ID); I have warning "Null type safety: The expression of type 'String' needs unchecked conversion to conform to '@Nonnull String'"

If I uncomment line with @SuppressWarnings("null") the warning disappeared, but I have the new one "Unnecessary @SuppressWarnings("null")"

And even @SuppressWarnings("all") complete removes all warnings