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4. public class A1{ Write output here:

public static void main(String[] args){
String first_name = "Kittu";
String last_name = "Sharma";
String name = first_name + " " + last_name;
System.out.println(name);
}
}
5. public class B{
Write output here:
public static void main(String[] args){
int age = 17;
age += 1;
age++;
++age;
System.out.println(age);
}
}
6. public class C6{ Write output here:
public static void main(String[] args){

int a = 5;
int b = 5;
System.out.println(a > b);
System.out.println(a == b);
}}
7. public class C7{ Write output here:

public static void main(String args[]){
int a=5;
int b=6;
System.out.println(a++ + ++a);
System.out.println(b++ + b++);
}}

8. Find the errors in the following Java codes:
a. public class program{

public static void main(String[] args){
int a = 10;

int b = 20
int c = a + b;
System.out.println("The value of c is: "+c);
}

}

Introduction to Programming in Java 101