68 lines
2.3 KiB
Java
68 lines
2.3 KiB
Java
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import java.util.Scanner;
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public class menu_main2 {
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public int compare(String st1,String st2)
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{
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return st1.compareTo(st2);
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}
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public String caseConvert(String st)
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{
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String converted="";
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for(int i=0;i<st.length();i++){
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char ch = st.charAt(i);
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if(Character.isUpperCase(ch)){
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converted+=Character.toLowerCase(ch);
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}
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else{
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converted+=Character.toUpperCase(ch);
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}
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}
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return converted;
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}
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public boolean substring(String st,String sub)
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{
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return st.contains(sub);
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}
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public StringBuffer hello(String st,String sub)
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{
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int index = st.indexOf(sub);
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StringBuffer sb = new StringBuffer(st);
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sb.replace(index,index+sub.length(),"Hello");
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return sb;
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}
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public static void main(String[] args) {
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menu_main2 obj = new menu_main2();
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Scanner sc = new Scanner(System.in);
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System.out.println("Enter:\na. To compare two strings\nb. To convert the uppercase character to lower and vice-versa\nc. To display whether an entered string is a substring of the other or not\nd. If the entered string is a substring of the other, replace it with Hello");
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char choice = sc.nextLine().charAt(0);
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System.out.println("Enter string");
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String str1 = sc.nextLine();
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String str2;
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switch(choice)
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{
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case 'a':
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System.out.println("Enter string to be checked");
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str2 = sc.nextLine();
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System.out.println("Comparison:"+obj.compare(str1,str2));
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break;
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case 'b':
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System.out.println("String in converted case:"+obj.caseConvert(str1));
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break;
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case 'c':
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System.out.println("Enter string to be checked");
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str2 = sc.nextLine();
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System.out.println("Is it a substring:"+obj.substring(str1,str2));
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break;
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case 'd':
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System.out.println("Enter string to be checked");
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str2 = sc.nextLine();
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System.out.println("Substituting hello string is:"+obj.hello(str1,str2));
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break;
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}
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}
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}
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