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Java implementation of JSON Web Token (JWT)

There is a newer version: 4.4.0

package com.auth0.jwt.impl;

import com.auth0.jwt.exceptions.JWTDecodeException;
import com.auth0.jwt.interfaces.Claim;

import java.util.Date;
import java.util.List;
import java.util.Map;

/**
 * The {@link NullClaim} class is a Claim implementation that returns null when any of it's methods it's called.
 */
public class NullClaim implements Claim {
    @Override
    public boolean isNull() {
        return true;
    }

    @Override
    public Boolean asBoolean() {
        return null;
    }

    @Override
    public Integer asInt() {
        return null;
    }

    @Override
    public Long asLong() {
        return null;
    }

    @Override
    public Double asDouble() {
        return null;
    }

    @Override
    public String asString() {
        return null;
    }

    @Override
    public Date asDate() {
        return null;
    }

    @Override
    public  T[] asArray(Class tClazz) throws JWTDecodeException {
        return null;
    }

    @Override
    public  List asList(Class tClazz) throws JWTDecodeException {
        return null;
    }

    @Override
    public Map asMap() throws JWTDecodeException {
        return null;
    }

    @Override
    public  T as(Class tClazz) throws JWTDecodeException {
        return null;
    }

    @Override
    public String toString() {
        return "Null Claim";
    }
}