Add files via upload

Author: misskalyani

string/amm.java

@@ -0,0 +1,28 @@
+
+import java.util.*;
+class demo
+{
+	public static void main(String []arg)
+	{
+	  char ch;
+		Scanner sc=new Scanner(System.in);
+		System.out.print("Enter String = ");
+		String s1=sc.next();
+		for(int i=0;i<s1.length();i++)
+		{
+		  ch=s1.charAt(i);
+			if(Character.isUpperCase(ch))
+			{
+				System.out.print(Character.toLowerCase(ch));
+			}
+			if(Character.isLowerCase(ch))
+			{
+				System.out.print(Character.toUpperCase(ch));
+			}
+			if(Character.isDigit(ch))
+			{
+				System.out.print("*");
+			}
+		}
+	}
+}

string/isdigit.java

@@ -0,0 +1,42 @@
+import java.util.*;
+/*class string
+{
+	public static void main(String arg[])
+	{
+		Scanner sc=new Scanner(System.in);
+		System.out.println("Enter Name = ");
+		char s=sc.next().charAt(0);
+		if((s>='a' && s<='z')|| (s>='A' && s<='Z'))
+		{
+		  System.out.println(s+"Is Aplhabate ");
+		}
+		if(s>='0' &&s<='9')
+		{
+		  System.out.println(s+"Is Digit");
+		}
+		else
+		{
+		  System.out.println(s+"Special Character");
+		}
+		
+	}
+}*/
+class demo
+{
+	public static void main(String []arg)
+	{
+		String s1=new String("Shri6533");
+		System.out.println(s1);
+		for(int i=0;i<s1.length();i++)
+		{
+			if((s1.charAt(i)>='a' && s1.charAt(i)<='z') || (s1.charAt(i)>='A' && s1.charAt(i)<='Z'))
+			{
+				System.out.print(s1.charAt(i));
+			}
+			if(s1.charAt(i)>='0' && s1.charAt(i)<='9')
+			{
+				System.out.print("*");
+			}
+		}
+	}
+}