Java Programing laungage

//Different Condition Checked using Equal And Equalto method.
package r4r.co.in;
public class EqualAndEqualto {
public static void main(String[] args) {
String s1 = new String("GOOD MORNING");     
//create String object
String s2 = new String("GOOD MORNING");
String s3 = "GOOD MORNING";   
//Create String Refrence
String s4 = "GOOD MORNING";
StringBuffer s5 = new StringBuffer("GOOD MORNING");
//Create String object using StringBuffer
System.out.print("Length of String s1&s2: " + s1.length());
System.out.print("\nLength of String s3&s4: " + s3.length());
System.out.print("\nLength of String s5: " + s5.length());
//Different Condition checked 
try {
    if (s1.equals(s2)) {
System.out.print("\nCondition 1 Successfully match");
    } else {
System.out.print("\nCondition 1 not match");
    }
    if (s1 == s2) {
System.out.print("\nCondition 2 Successfully match");
    } else {
System.out.print("\nCondition 2 not match");
    }
    if (s3.equals(s4)) {
System.out.print("\nCondition 3 Successfully match");
    } else {
System.out.print("\nCondition 3 not match");
    }
    if (s3 == s4) {
System.out.print("\nCondition 4 Successfully match");
    } else {
System.out.print("\nCondition 4 not match");
    }
    if (s1.equals(s5)) {
System.out.print("\nCondition 5 Successfully match");
    } else {
System.out.print("\nCondition 5 not match");
    }
    if (s3.equals(s5)) {
System.out.print("\ncondition 6 Successfully match");
    } else {
System.out.print("\ncondition 6 not match");
    }
} catch (Exception e) {
    System.out.print(e);

}
    }
}

//Example for Store element from String into Array.
package r4r.co.in;
public class NewClass {
public static void main(String[] args) {
String s1 = "Following Demo belongs to NewClass";
System.out.println("Length of String s1: " + s1.length());  
//Determine length of String
System.out.println("Position of D:" + s1.indexOf('D'));    
//taking value position
System.out.println("Position of b:" + s1.lastIndexOf('b')); 
//taking value position
int start = 10;
int end = 20;
char c[] = new char[(end + 10) - start];    
//Store element into array
s1.getChars(start, end + 1, c, 0);
System.out.print(c);
    }
}