rajeevprasanna

package staticExample;

public class Frog {
	static int frogCount = 0;
	
	public Frog(){
		frogCount += 1;
	}
	
	public static void main(String[] args){

rajeevprasanna

package staticExample;

public class Foo {
	int x = 3;
    public static void main (String [] args) {
       System.out.println("x is " + x);
}//“Hey, I have no idea which Foo object’s x variable you’re trying to print!”
    //Remember, it’s the class running the main() method, not an instance of the class.
}

rajeevprasanna

package staticExample.staticOverride;

public class Animal {
	static void doStuff() {
		System.out.print("a ");
	}
}

rajeevprasanna

package floatAndDoubleComparison;

public class Test1 {
	public static void main(String[] args) {
		double a = 99999.8d;
		double b = 99999.65d;
		System.out.println(a + b);

		float a2 = 99999.8f;
		float b2 = 99999.65f;

rajeevprasanna

package charLiteral;

//Refer : https://gist.github.com/rajeevprasanna/8755247
public class CharLiteral {
	
	public static void main(String[] args) {
		char a = 0x892;
		System.out.println(a);// ?

		char b = 982;

rajeevprasanna

package implicitIntCating;

public class TestX {
	
	public static void main(String[] args) {
		byte a = 3;
		byte b = 4;

		byte c = (byte) (a + b);
		System.out.println(c); // 7

rajeevprasanna

package variablePassing;


public class ReferenceTest {
	public static void main(String[] args) {
		int a = 1;
		ReferenceTest rt = new ReferenceTest();
		System.out.println("Before modify() a = " + a);
		rt.modify(a);
		System.out.println("After modify() a = " + a);

rajeevprasanna

package variablePassing;

public class InstanceVariableShadowing {
	
	static int size = 7;

	static void changeIt(int size) {
		size = size + 200;
		System.out.println("size in changeIt is " + size);
	}

rajeevprasanna

package variablePassing;

// Refer : https://gist.github.com/rajeevprasanna/8755845
public class ShadowReferenceVariables {
	
	public Bar myBar = new Bar();

	void changeIt(Bar myBar) { //myBar is copy reference pointing to inst1
		myBar.barNum = 99; //inst1 bar variable is modified
		System.out.println("myBar.barNum in changeIt is " + myBar.barNum); //99	

rajeevprasanna

package arrays;

public class ArrayInitialization {
	
	public static void main(String[] args) {
		
		// Declare and create an array holding three references to int arrays
		int[][] scores = new int[3][];
		
		// the first element in the scores array is an int array of four int elements