Option is a good thing that most people really don't know how to use!
OverviewNullPoInterException, ChInese name:Null poInter exceptionNPE, also known as NPE, is one of the most common error anomalies In software systems.Long ago, the Google Guava project IntroducedOptionalNull poInter exceptionNullTo expect programmers to write code that is both neat and more readable...
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Make American fighter jets unable to fly! China starts a counterattack, foreign media: this is more serious than chips
followThe hostility of the United States towards China has been ongoing for many years, only because the United States has always believed that China's economic development will inevitably affect its interests, and even threaten its hegemonic position. However, because China has always adhered to an independent and independent development path, although it needs to learn from advanced countries such as the United States in many fields, its dependence is not high...
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Grab layoffs, internet chill sweeping Southeast Asia
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Urban Highway Hidden Underground | Discovering the Great Bay Area
|Greater Bay Area Synthetic Biology Laboratory|Controversy over the safety of chemically synthesized pigmentsHigh cost of natural pigmentsHow can biosynthetic pigments break through?Everything can be AICan artificial intelligence really design proteins?These cutting-edge achievements in Synthetic biologyIs being implemented in a location in the Greater Bay AreaAs a representative discipline of biotechnology and information Technological convergenceSynthetic biology is considered the futureOne of the disruptive technologies.At the Shenzhen Engineering Biology Industry Innovation CenterA large numberResearchers from startups in the Greater Bay AreaIs it cheaper than natural pigments? More environmentally friendly than chemically synthesized pigments?Biosynthetic pigments stand out in a variety of pigment production industries!Becoming a new trend in the development of pigment production industry?Yuan Xiaoli:Since entering human civilization, we have experienced several forms of civilizationAgricultural Civilization PeriodHuman beings obtain material and energy mainly through Natural product; After entering the industrial civilization, due to technological progress, people synthesized a lot of substances and energy through chemistry...
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How powerful is the Baihetan Dam that China spent 180 billion yuan to build? Fill West Lake with water in 6 minutes
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New low in history! How does a TV set that won't move for 200 yuan lose the hearts of consumers?
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The man spent 12999 yuan online to purchase a TV, but the merchant was delayed in shipping. Customer service: A supplement of 1000 yuan was required before shipping
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No wonder the WiFi on your phone often disconnects. It turns out that this setting has not been debugged properly and has increased knowledge
During the process of using our mobile phone, many friends may have encountered the problem of our phone's WiFi signal being clearly full, but when browsing web pages, the network is always intermittent, and sometimes WeChat messages are delayed before receiving. At this point, many friends may think that there is a problem with the WiFi network or phone, but the main reason for these situations is that the switches inside the phone are turned off...
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How to achieve all-round and all-weather monitoring of the "sky, sky, and sky"? Mount Wuyi National Park hand in intelligent answer sheet
The protection of the ecological environment cannot be separated from technological means. In the intelligent management center of Mount Wuyi National Park, through the comprehensive application of intelligent technology, it has realized the omni-directional and all-weather monitoring and management of the "heaven, earth and sky" of the park...
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Catching up with and surpassing Hongya Cave and Kuanzhai Alley, it is expected to become a new place for wealth creation in Guang'an, a top tier city in the world
On Teacher's Day five years ago, the media, accustomed to speculation, never expected that Jack Ma would announce his Alibaba inheritance plan and announce his retirement one year later to engage in education and public welfare. You know, Biden is 80 years old and still wants to run for president...
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Stride towards a powerful online country! Eight numbers to see the acceleration of China's network infrastructure construction
Under the guidance of the network power strategy, China's digital economy has reached a scale of 50.2 trillion yuan, firmly ranking second in the world; The annual transaction scale of mobile payment is 527 trillion yuan, ranking first in the world; There are 2...
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In the marriage between Liu Yang, the "aviation first lady", and her husband, there is a hidden truth about her two trips to space 10 years later
Yang Liwei.The first female astronaut in space was on the Shenzhou 9 mission...
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