public class BreakDemo01 {
public static void main(String[] args) {
int i = 0;
while (i<100){
i++;
System.out.println(i);
if (i==30){
break;
}
}
System.out.println("123");
}
}
public class LabelDemo01 {
public static void main(String[] args) {
//打印101-150之间所有的质数
//质数是指在大于1的自然数中,除了1和它本身以外不再有其他因数的自然数。
int count = 0;
//不建议使用标签
outer:for (int i = 101; i < 150; i++) {
for (int j = 2; j < i/2; j++) {
if (i % j ==0){
continue outer;
}
}
System.out.print(i+" ");
}
}
}
public class TestDemo01 {
public static void main(String[] args) {
//打印三角形 5行
for (int i = 1; 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();
}
}
}
原文:https://www.cnblogs.com/202116xi/p/14434109.html