Java程序流程图实现及JUnit测试用例

根据流程图编写程序实现相应处理：

public class Program {
    public static String calculateJ1(int x, int y) {
        int j = 10 * x - y;
        return 'j1=: ' + j;
    }

    public static String calculateJ2(int x, int y) {
        int j = (x - y) * (100000 % 7);
        return 'j2=: ' + j;
    }

    public static String calculateJ3(int x, int y) {
        double j = y * Math.log(x + 10);
        return 'j3=: ' + j;
    }
}

编写测试类：

import org.junit.Test;
import static org.hamcrest.CoreMatchers.startsWith;
import static org.junit.Assert.assertThat;

public class ProgramTest {

    @Test
    public void testCalculateJ1() {
        int x = 5;
        int y = 3;
        String result = Program.calculateJ1(x, y);
        assertThat(result, startsWith('j1=: '));
    }

    @Test
    public void testCalculateJ2() {
        int x = 8;
        int y = 2;
        String result = Program.calculateJ2(x, y);
        assertThat(result, startsWith('j2=: '));
    }

    @Test
    public void testCalculateJ3() {
        int x = 6;
        int y = 4;
        String result = Program.calculateJ3(x, y);
        assertThat(result, startsWith('j3=: '));
    }
}

这里只给出了三个最基本的测试方法，每个方法测试了一个计算结果的返回值是否以特定的文字开头。根据流程图的不同路径，可以在测试类中编写更多的测试方法来覆盖更多的情况。