break continue

break强制退出循环，continue退出本次循环

• break

int i = 0;
while (i < 100) {
    i++;
    System.out.println(i);
    if (i == 30){
        break;
    }
}

• continue

int i = 0;
while (i < 100) {
    i++;
    if (i % 10 == 0) {
        System.out.println();
        continue;
    }
    System.out.print(i);
}

实例：打印三角形

for (int i = 0; i <= 5; i++) {
    for (int j = 5; j >= i; j--) {
        System.out.print(" ");
    }
    for (int j = 1; j <= i; j++) {
        System.out.print("*");
    }
    for (int j = 1; j < i; j++) {
        System.out.print("*");
    }
    System.out.println();
}