java : 的使用
最近在看JDK源码时总是看到 : 这个标示符:
public static void main(String[] args) { int a = 0; for (int i = 0; i < 3; i++) { for (int j = 0; j < 5; j++) { first: if (i == 1) { break first; } a++; } } System.out.println(" a = " + a); }
输出结果:a = 15
public static void main(String[] args) { int a = 0; for (int i = 0; i < 3; i++) { first: for (int j = 0; j < 5; j++) { if (i == 1) { break first; } a++; } } System.out.println(" a = " + a); }
输出结果:a = 10
public static void main(String[] args) { int a = 0; first: for (int i = 0; i < 3; i++) { for (int j = 0; j < 5; j++) { if (i == 1) { break first; } a++; } } System.out.println(" a = " + a); }