Language: Java

import java.util.*;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        // 整数の入力
        String C = sc.next();
        
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
        
        for(i = 0; i < 25; i++){
            if(C.equals(eng[i])){
                System.out.println(eng[i+1]);
                break;
            }
        }

        // 出力
        
    }
}

Compiler output:
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                        ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                            ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                    ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                        ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                            ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                    ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                        ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                            ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                    ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                        ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                            ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                    ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                        ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                            ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                                ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                                    ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                                        ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                                            ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                                                ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                                                    ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                                                        ^
Main.java:9: error: incompatible types: char cannot be converted to String
        String[] eng = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','x','y'}; 
                                                                                                                            ^
Main.java:11: error: cannot find symbol
        for(i = 0; i < 25; i++){
            ^
  symbol:   variable i
  location: class Main
Main.java:11: error: cannot find symbol
        for(i = 0; i < 25; i++){
                   ^
  symbol:   variable i
  location: class Main
Main.java:11: error: cannot find symbol
        for(i = 0; i < 25; i++){
                           ^
  symbol:   variable i
  location: class Main
Main.java:12: error: cannot find symbol
            if(C.equals(eng[i])){
                            ^
  symbol:   variable i
  location: class Main
Main.java:13: error: cannot find symbol
                System.out.println(eng[i+1]);
                                       ^
  symbol:   variable i
  location: class Main
31 errors