Explain static variables with examples and a diagram.
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A static variable in Java is a variable that is associated with the class rather than an instance of the class. This means that all instances of the class share the same static variable. They are declared using the static keyword.
public class Example {
static int count = 0;
public Example() {
count++;
}
}
Diagram – The diagram below illustrates the relationship between the class and the static variable:
+———-+
Example | count=0 |
+———-+
| |
Instance1 | |
+———-+
| |
Instance2 | |
+———-+