labeledfor.java

Java例程

//: LabeledFor.java
// Java抯 "labeled for loop"
public class LabeledFor {
	public static void main(String[] args) {
		int i = 0;
		outer: // Can't have statements here
		for(; true ;) { // infinite loop
			inner: // Can't have statements here
			for(; i < 10; i++) {
				prt("i = " + i);
				if(i == 2) {
					prt("continue");
					continue;
				}
				if(i == 3) {
					prt("break");
					i++; // Otherwise i never
					// gets incremented.
					break;
				}
				if(i == 7) {
					prt("continue outer");
					i++; // Otherwise i never
					// gets incremented.
					continue outer;
				}
				if(i == 8) {
					prt("break outer");
					break outer;
				}
				for(int k = 0; k < 5; k++) {
					if(k == 3) {
						prt("continue inner");
						continue inner;
					}
				}
			}
		}
		// Can't break or continue
		// to labels here
	}
	
	static void prt(String s) {
		System.out.println(s);
	}
} ///:~