When I compile my java file I get the following msg:
Note: test.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
I tried to compile it with the -Xlint and I got this msg:
test.java:1829: warning: [unchecked] unchecked conversion
found : <anonymous java.util.Comparator>
required: java.util.Comparator<? super int[]>
Arrays.sort(myarray, new Comparator(){
^
test.java:1829: warning: [unchecked] unchecked method invocation: <T>sort(T[],j
ava.util.Comparator<? super T>) in java.util.Arrays is applied to (int[][],<anon
ymous java.util.Comparator>)
Arrays.sort(myarray, new Comparator(){
^
2 warnings
It seems like the problem lays in the following code-block:
public static void sort(int[][] myarray){
Arrays.sort(myarray, new Comparator(){
public int compare(Object o1, Object o2) {
int[] i1 = (int[]) o1;
int[] i2 = (int[]) o2;
return Double.compare(i1[0], i2[0]);
}
});
}
Can someone please tell me what to do and what this error means?