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Display the amount of free memory in the Java Virtual Machine
In order to display the amount of free memory in the Java Virtual Machine, we use the freeMemory() method. It is a method of the java.lang.Runtime Class. It returns the amount of free memory in the Java Virtual Machine. If we call the gc method, there is a possibility of increase of free memory.
Declaration − The java.lang.Runtime.freeMemory() method is declared as follows −
public long freeMemory()
Let us see a program to display the amount of free memory in the Java Virtual Machine −
Example
public class Example {
public static void main(String[] args) {
// print statement at the start of the program
System.out.println("Start...");
// displays the free memory
System.out.println("" + Runtime.getRuntime().freeMemory());
}
}Output
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Updated on: 25-Jun-2020
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