Category: Java Concepts

Java Concepts

How to check Java Heap Memory in windows system

Find Minimum Heap Memory Open windows command prompt and then enter the following command. javaw -XX:+PrintFlagsFinal | find “InitialHeapSize” Ouput Find Maximum Heap Memory Open windows command prompt and then enter the following command. javaw -XX:+PrintFlagsFinal | find “MaxHeapSize” Output Find ThreadStackSize , HeapSizePerGCThread Memory Open windows command prompt and then enter the following command. […]

How to run windows exe and bat files using java?

This is example of run exe and batch files from java code and catch response from them in java. Then create four java files in com.narayanatutorial.main package. RunExeMain.java RunWithParamMain.java RunBatchMain.java GetResponseMain.java 1) RunExeMain.java This file run exe file (Here cmd.exe) using java program. public class RunExeMain { //This is Example that display how to run […]

Java Reflection API

Classes and Objects interview questions

Java Reflection API Java Reflection API is a process of modifying or retrieve metadata of a class at run time. The java.lang.Class class provides methods that can be used to get metadata and change the run time behavior of a class. The java.lang and java.lang.reflect packages are providing classes for java reflection. The Java Reflection API is […]