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public class ArrayCompareTest {
public static void main(String args[]) {
//comparing primitive int arrays in Java
int[] i1 = new int[] {1,2,3,4};
int[] i2 = new int[] {1,2,3,4};
int[] i3 = new int[] {0,2,3,4};
//Arrays.equals() compare Array and return true if both array are equal
//i..e either both of them are null or they are identical in length, and each pair
//match each other e.g. i[0]=i2[0], i[1]=i2[1] and so on
//i1 and i2 should be equal as both contains same elements
boolean result = Arrays.equals(i1, i2);
System.out.println("Comparing int array i1: " + Arrays.toString(i1)
+ " and i1: " + Arrays.toString(i2));
System.out.println("Does array i1 and i2 are equal : " + result);
//array ii2 and i3 are not equals as only length is same, first pair is not same
result = Arrays.equals(i2, i3);
System.out.println("Comparing int array i2: " + Arrays.toString(i2)
+ " and i3: " + Arrays.toString(i3));
System.out.println("Does array i2 and i3 are equal : " + result);
//comparing floating point or double arrays in Java
double[] d1 = new double[] {1.5, 2.4, 3.2, 4,1};
double[] d2 = new double[] {1.5, 2.4, 3.2, 4,1};
double[] d3 = new double[] {0.0, 2.4, 3.2, 4,1};
//Comparing two floating-point arrays using Arrays.equals() in Java
//double array d1 and d2 should be equal - length same, each index matches
result = Arrays.equals(d1, d2);
System.out.println("Comparing double array d1: " + Arrays.toString(d1)
+ " and d2: " + Arrays.toString(d2));
System.out.println("Does double array d1 and d2 are equal : " + result);
//double array d2 and d3 is not equal - length same, first pair does not match
result = Arrays.equals(d2, d3);
System.out.println("Comparing double array d2: " + Arrays.toString(d2)
+ " and d3: " + Arrays.toString(d3));
System.out.println("Does double array d2 and d3 are same : " + result);
//comparing Object array, here we will use String array
String[] s1 = new String[]{"One", "Two", "Three"};
String[] s2 = new String[]{"One", "Two", "Three"};
String[] s3 = new String[]{"zero", "Two", "Three"};
//String array s1 and s2 is equal - length same, each pair matches
result = Arrays.equals(s1, s2);
System.out.println("Comparing two String array s1: " + Arrays.toString(s1)
+ " and s2: " + Arrays.toString(s2));
System.out.println("Are both String array s1 and s2 are equal : " + result);
//String array s2 and s3 is not equal - length same, first pair different
result = Arrays.equals(d2, d3);
System.out.println("Comparing two String array s2: " + Arrays.toString(s2)
+ " and s3: " + Arrays.toString(s3));
System.out.println("Are both String array s2 and s3 are equal : " + result);
//Comparing nested arrays with equals and deepEquals method
//Arrays.equals() method does not compare recursively,
//while deepEquals() compare recursively
//if any element inside Array is type of Array itself,
//as here second element is String array
Object[] o1 = new Object[]{"one", new String[]{"two"}};
Object[] o2 = new Object[]{"one", new String[]{"two"}};
System.out.println("Object array o1: " + Arrays.toString(o1) + " and o2: "
+ Arrays.toString(o2));
System.out.println("Comparing Object Array o1 and o2 with Arrays.equals : "
+ Arrays.equals(o1, o2));
System.out.println("Comparing Object Array o1 and o2 with Arrays.deepEquals : "
+ Arrays.deepEquals(o1, o2));
}
}
आउटपुट: तुलना पूर्णांक सरणी i1: [1, 2, 3, 4] और i1 [ 1, 2, 3, 4] करता सरणी i1 और i2 बराबर हैं: सच
तुलना पूर्णांक सरणी i2: [1, 2, 3, 4] और i3: [0, 2, 3, 4] करता है सरणी i2 और i3 बराबर हैं: झूठी
तुलना डबल सरणी d1: [1.5, 2.4, 3.2, 4.0, 1.0] और d2: [1.5, 2.4, 3.2, 4.0, 1.0] करता है डबल सरणी d1 और d2 बराबर हैं: सच
डबल मुकाबले सरणी डी 2: [1.5, 2.4, 3.2, 4.0, 1.0] और डी 3: [0.0, 2.4, 3.2, 4.0, 1।झूठी
मुकाबले दो स्ट्रिंग सरणी S1: [एक, दो, तीन] और s2: स्ट्रिंग सरणी एस 1 और s2 दोनों बराबर हैं [एक, दो, तीन] हैं 0] डबल सरणी d2 और डी 3 एक ही हैं करता है : सच
मुकाबले दो स्ट्रिंग सरणी s2: [एक, दो, तीन] और S3: [शून्य, दो, तीन] स्ट्रिंग सरणी s2 और S3 दोनों बराबर हैं कर रहे हैं: झूठी
वस्तु सरणी O1 [ एक, [Ljava.lang.String; @ 19821f] और ओ 2: [एक, [Ljava.lang.String; @ addbf1] Arrays.equals के साथ ऑब्जेक्ट ऐरे ओ 1 और ओ 2 की तुलना: झूठी ऑब्जेक्ट ऐरे की तुलना o1 और o2 Arrays.deepEquals के साथ: सत्य
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