In this case, the output will be "Key 105 is contained in 'stu' HashMap", since the key 105 was added to the HashMap earlier. Otherwise, it prints the message "Key 105 is not contained in 'stu' HashMap". If the key is present, the program prints the message "Key 105 is contained in 'stu' HashMap". Then, the containsKey() method of the HashMap is used to check if the key 105 is present in the HashMap or not. In this case, the keys are integers and the values are strings representing names. Some vendors will be supporting releases for longer than six months.Write a Java program to check whether a HashMap contains a specified Key or notįirst, a HashMap is created and some key-value pairs are added to it using the put() method. If you would like to download Java for free, you can get OpenJDK builds from the following vendors, among others: With the introduction of the new release cadence, many have asked where they should download Java, and if it is still free.
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