Using Math Pow in Java

public class abejeroact53 {
public static void main(String []Args) {

System.out.println(Math.pow(3,3));

}}

Library Math Operations in Java

public class abejeroact52 {
public static void main(String []Args) {

System.out.println(Math.toDegrees(Math.PI/2));
System.out.println(Math.toRadians(30));
System.out.println(Math.sin(0));
System.out.println(Math.sin(Math.toRadians(270)));
System.out.println(Math.sin(Math.PI/6));
System.out.println(Math.sin(Math.PI/2));
System.out.println(Math.cos(0));
System.out.println(Math.cos(Math.PI/6));
System.out.println(Math.cos(Math.PI/2));
System.out.println(Math.acos(0.5));

}}

Matching Strings in Java

public class abejeroact51 {
public static void main(String []Args) {

String string1 = "Hello";
String string2 = "hello";

if(string1.compareTo(string2)==0)
{
System.out.println("Match");
}
else
{
System.out.println("No Match");
}

}}

Searching Specific Words in Java

public class abejeroact50 {
public static void main(String []Args) {

String searchMe = "Green Eggs and Ham";
String findMe = "and";

int searchMelength = searchMe.length();
int findMelength = findMe.length();
boolean foundIt = false;

for (int i = 0; i <= (searchMelength-findMelength); i++)
{
if(searchMe.regionMatches (i, findMe, 0, findMelength))
{
foundIt = true;
System.out.println(searchMe.substring(i, i+findMelength));
break;
}
}
if (!foundIt)
{
System.out.println("No Match Found");
}
}
}

Using Comments in Java

import java.util.Scanner;
public class abejeroact49 {
Scanner input = new Scanner(System.in);

//method ready to insert (if theres any method for this source file.

public static void main(String Args[]) {



}
}

To Upper and Lower Case in Java

import java.lang.String;
public class abejeroact48 {
public static void main(String []Args) {

String name = "sam";
String name2 = "ANA";

String b = name2.toLowerCase();
String b2 = name.toUpperCase();

System.out.println("Lower Case\t" +b);
System.out.println("Upper Case\t" +b2);

}
}

Getting the Index of, and Reading Length In Java

public class abejeroact47 {
public static void main(String []Args) {

Double d = 858.43;
String s = Double.toString(d);

int dot = s.indexOf('.');

System.out.println((s.length()-dot-1) + "\t digit after decimal point");

}
}