lets programming and enjoy, here below i write some simple programs.
example:1
The below program we assign the variable and their type first. Then, we assign the values.
package selva.day1;
public class Calculation {
public static void main(String[] args) {
int tamil;
tamil=80;
int english;
english=90;
int total=tamil+english;
System.out.println(“total”);
}
}
result:
170
example:2
In this program we assign the variables on a single line using commas, then we assign the values.
package selva.day1;
public class Calculation {
public static void main(String[] args) {
int tamil,english;
tamil=80;
english=90;
int total=tamil+english;
System.out.println(total);
}
}
result:
170
example:3
In this program we perform it directly.
package selva.day1;
public class Calculation {
public static void main(String[] args) {
int tamil=80;
int english=90;
int total=tamil+english;
System.out.println(total);
}
}
result:
170
example:4
In this program we perform type change like float, character and see the results.
package selva.day1;
public class Calculation {
public static void main(String[] args) {
int tamil;
tamil=80;
int english;
english=90;
float total=tamil+english;
System.out.println(total);
}
}
result:
170.0
package selva.day1;
public class Calculation {
public static void main(String[] args) {
int tamil;
tamil=80;
int english;
english=90;
char total=tamil+english;
System.out.println(total);
}
}
result:
Exception in thread “main” java.lang.Error: Unresolved compilation problem:
Type mismatch: cannot convert from int to char
at selva.day1.Calculation.main(Calculation.java:7)
example:5
In this program we need to find the average.
package selva.day1;
public class Calculation {
public static void main(String[] args) {
int tamil=80;
int english=90;
int total=tamil+english;
System.out.println(total);
int avg= total/2;
System.out.println(avg);
}
}
result:
170
85
example:6
In this program we perform the if,else operations and see the result.
package selva.day1;
public class Calculation {
public static void main(String[] args) {
int tamil=80;
int english=90;
int total=tamil+english;
System.out.println(total);
int avg= total/2;
System.out.println(avg);
if(avg>70) {
System.out.println(“A”);
}
else {
System.out.println(“B”);
}
}
}
result:
170
85
A
example:7
In this program we perform the nestif,else operations and see the result.
package selva.day1;
public class Calculation {
public static void main(String[] args) {
int tamil=80;
int english=90;
int total=tamil+english;
System.out.println(total);
int avg= total/2;
System.out.println(avg);
if(avg>70) {
System.out.println(“A”);
if (avg>80) {
System.out.println(“C”);
}
}
else {
System.out.println(“B”);
}
}
}
result:
170
85
A
C
example:8
In this program we perform the comparison operation and see the result.
package selva.day1;
public class Calculation {
public static void main(String[] args) {
int tamil=80;
int english=90;
int total=tamil+english;
System.out.println(total);
int avg= total/2;
System.out.println(avg);
if(avg<=90) {
System.out.println(“A”);
if (avg==85) {
System.out.println(“C”);
}
}
else {
System.out.println(“B”);
}
}
}
result:
170
85
A
C
example:9
In this program we perform the comparison operation and see the result.
package selva.day1;
public class Calculation {
public static void main(String[] args) {
int tamil=80;
int english=90;
int total=tamil+english;
System.out.println(total);
int avg= total/2;
System.out.println(avg);
if(avg!=90) {
System.out.println(“A”);
if (avg==85) {
System.out.println(“C”);
}
}
else {
System.out.println(“B”);
}
}
}
result:
170
85
A
C
selvakrish 