How we can pass parameters in Java?

In Java, parameters are always gone by value. for instance , following program prints i = 10, j = 20.

// Test.java
class Test {
// swap() doesn't swap i and j
public static void swap(Integer i, Integer j) {
	Integer temp = new Integer(i);
	i = j;
	j = temp;
}
public static void main(String[] args) {
	Integer i = new Integer(10);
	Integer j = new Integer(20);
	swap(i, j);
	System.out.println("i = " + i + ", j = " + j);
}
}

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How we can pass parameters in Java?

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