Java Return action __java

Source: Internet
Author: User
Two functions of return in Java:
(1) Returns the value of the specified type of the method (this value is always determined), or it can be an object
(2) The end of the method
Format: return[() [expression][]];
Two forms: (1) There are return types for example: returns I;
(2) no return type returns;
Example
1.public static void Main (string[] args) {
System.out.println ("---------no return statement test--------" of the returned value type);
for (int i = 1;i <= i++) {
if (i = = 4) return;
System.out.println ("i =" + i);
}
}
Output:---------Return statement test with no returned value type--------
I=1
i=2
I=3
2.public class Returntest {
public static void Main (string[] args) {
System.out.println ("---------no return statement test--------" of the returned value type);
for (int i = 1;i <= i++) {
if (i = = 4) return;
System.out.println ("i =" + i);
}
New Returntest (). T ();

}
public int T () {
int i;
System.out.println ("---------have return statement test--------" of the returned value type);
for (i = 1;i <= i++) {
if (i = = 4) return i;
System.out.println ("i =" + i);
}
return i;

}
}
Output:---------Return statement test with no returned value type--------
i = 1
i = 2
i = 3
Reason: Return function to End method

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