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Collection Replace
The following example shows how to use Collections.replaceAll API.
It replaces all occurrences of one specified value in a list with another.
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package com.bethecoder.tutorials.utils.collections;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class CollectionsReplace {
public static void main (String [] args) {
List<Integer> intList = Arrays.asList(new Integer [] {
1, 2, 3, 4,
1, 2, 3,
1, 2,
1
});
System.out.println("Initial list : " + intList);
Collections.replaceAll(intList, 1, -1);
System.out.println("After replace : " + intList);
}
}
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It gives the following output,
Initial list : [1, 2, 3, 4, 1, 2, 3, 1, 2, 1]
After replace : [-1, 2, 3, 4, -1, 2, 3, -1, 2, -1]
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