By traversing to each element of array and copy the content of toString() method.
public static String[] getStringArray(Object[] objects) {
if (objects == null || objects.length == 0) {
return null;
}
String[] result = new String[objects.length];
int counter = -1;
for (Object obj : objects) {
counter++;
if (obj == null) {
result[counter] = null;
} else {
result[counter] = obj.toString();
}
}
return result;
}
Find the below working application.
Employee.java
package com.sample.app;
public class Employee {
private int id;
private String name;
public Employee(int id, String name) {
this.id = id;
this.name = name;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append(id).append(":").append(name);
return builder.toString();
}
}
App.java
package com.sample.app;
public class App {
private static void printArray(String[] arr) {
if (arr == null || arr.length == 0) {
return;
}
for (String s : arr) {
System.out.print(s + " ");
}
System.out.println();
}
public static String[] getStringArray(Object[] objects) {
if (objects == null || objects.length == 0) {
return null;
}
String[] result = new String[objects.length];
int counter = -1;
for (Object obj : objects) {
counter++;
if (obj == null) {
result[counter] = null;
} else {
result[counter] = obj.toString();
}
}
return result;
}
public static void main(String[] args) {
Employee[] emps = { new Employee(1, "Ram"), new Employee(2, "Joel"), new Employee(3, "Bomma") };
String[] result1 = getStringArray(emps);
printArray(result1);
}
}
Output
1:Ram 2:Joel 3:Bomma
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