Efficient Java Coding: Using Try with Resources to Automatically Close Resources

In this lecture we are going to learn about try with resources:
-- first thing is what is try with resources
-- It will close the resource

#1 use of try with finally without catch

BufferedReader br = null;

try {

// Create a new BufferedReader to read from the InputStreamReader
br = new BufferedReader(isr);

} finally {
if(br!=null)
}

Note : finally block always execute either exception occured or not so that it is used to close the resources.

#2
try with resource
try-with-resources statement, we can simplify this code and avoid the need for a finally block:

e.g


} catch(IOException e){
// Handle the exception
}

}

#corejava #try #tutorial

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#3 try with with multiple resource
e.g
try (Resource1 res1 = new Resource1();
Resource2 res2 = new Resource2()) {

} catch (Exception e) {
// Handle the exception
}

When the try block is exited, the resources will be closed in the following order:

Resource2
Resource1

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