int array from string array code example

Example 1: how to convert string to array in java

How to convert string to array

import java.util.*; 
  
public class GFG { 
  
    public static void main(String args[]) 
    { 
  
        String str = "GeeksForGeeks"; 
  
        // Creating array and Storing the array 
        // returned by toCharArray() 
        char[] ch = str.toCharArray(); 
  
        // Printing array 
        for (char c : ch) { 
            System.out.println(c); 
        } 
    } 
}

Example 2: how to put a string in an array parameter java

public class Test {
  public static void main(String[] args) {
    // Declare a constant value for the number of lockers
    final int NUMBER_OF_LOCKER = 100;

    // Create an array to store the status of each array
    // The first student closed all lockers, each lockers[i] is false
    boolean[] lockers = new boolean[NUMBER_OF_LOCKER];

    // Each student changes the lockers
    for (int j = 1; j <= NUMBER_OF_LOCKER; j++) {
      // Student Sj changes every jth locker
      // starting from the lockers[j - 1].
      for (int i = j - 1; i < NUMBER_OF_LOCKER; i += j) {
        lockers[i] = !lockers[i];
      }
    }

    // Find which one is open
    for (int i = 0; i < NUMBER_OF_LOCKER; i++) {
      if (lockers[i])
        System.out.println("Locker " + (i + 1) + " is open");
    }
  }
}