Program 23: WAP to check if a given String is a Palindrome
import java.util.*;
class P23 {
public static void main(String[] args) {
String str, reversed = "";
Scanner sc = new Scanner(System.in);
System.out.print("Enter your sentence : ");
str = sc.nextLine();
for (int i = str.length() - 1; i >= 0; --i) {
reversed += str.charAt(i);
}
if(reversed.equalsIgnoreCase(str)) {
System.out.print("Entered String is Palindrome.");
} else {
System.out.print("Entered String is not a Palindrome.");
}
}
}
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Program 24: WAP to find the sum of numbers using user-defined methods
import java.util.*;
class P24 {
static int sum(int a, int b) {
return (a + b);
}
public static void main(String[] args) {
int a, b, r;
Scanner sc = new Scanner(System.in);
System.out.print("Enter the value of a : ");
a = sc.nextInt();
System.out.print("Enter the value of b : ");
b = sc.nextInt();
r = sum(a, b);
System.out.print("Sum of a and b : " + r);
}
}
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Program 25: WAP to find the area of a rectangle using a method
import java.util.*;
class P25 {
public static void main(String[] args) {
int x, y, a;
Scanner sc = new Scanner(System.in);
System.out.print("Enter the length of Rectangle : ");
x = sc.nextInt();
System.out.print("Enter the breadth of Rectangle : ");
y = sc.nextInt();
P25 p = new P25();
a = p.area(x, y);
System.out.print("Here is the area of Rectangle : " + a);
}
public int area(int l, int b) {
return (l * b);
}
}
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