From 947ab4cb0470e16f295d02a6dc3cc8c49cffdedb Mon Sep 17 00:00:00 2001
From: ISWB Prasetya <iswbprasetya@iswbs-mbp.cs.uu.nl>
Date: Tue, 22 Aug 2017 13:49:55 +0200
Subject: [PATCH] fixing the small examples
---
examples/Arrays0.java | 19 ++++++++
examples/Arrays2D.java | 88 +++++++++++++++++++++++++++++++++++
examples/SideEffects.java | 15 ++++++
examples/TryCatchFinally.java | 40 ++++++++++++++++
4 files changed, 162 insertions(+)
create mode 100644 examples/Arrays0.java
create mode 100644 examples/Arrays2D.java
create mode 100644 examples/SideEffects.java
create mode 100644 examples/TryCatchFinally.java
diff --git a/examples/Arrays0.java b/examples/Arrays0.java
new file mode 100644
index 0000000..46db501
--- /dev/null
+++ b/examples/Arrays0.java
@@ -0,0 +1,19 @@
+public class Arrays0
+{
+ public static void foo()
+ {
+ int x;
+ int y = 4+8;
+ int[] a = new int[12];
+ int[] b = new int[0];
+ a[5] = 2;
+ try
+ {
+ x = b[y];
+ }
+ catch (ArrayIndexOutOfBoundsException e)
+ {
+ x = a[5];
+ }
+ }
+}
\ No newline at end of file
diff --git a/examples/Arrays2D.java b/examples/Arrays2D.java
new file mode 100644
index 0000000..adb1ba6
--- /dev/null
+++ b/examples/Arrays2D.java
@@ -0,0 +1,88 @@
+// https://www.cs.utexas.edu/~scottm/cs307/javacode/codeSamples/Life.java
+
+import java.util.Scanner;
+
+public class Arrays2D {
+
+ public static void show(boolean[][] grid){
+ String s = "";
+ for(int x = 0; x < 10; x++){
+ for(int y = 0; y < 10; y++)
+ if(grid[x][y])
+ s += "*";
+ else
+ s += ".";
+ s += "\n";
+ }
+ System.out.println(s);
+ }
+
+ public static boolean[][] gen(){
+ boolean[][] grid2 = new boolean[10][10];
+ for(int r = 0; r < 10; r++)
+ {
+ for(int c = 0; c < 10; c++)
+ {
+ if( 1 > 0.7 )
+ grid2[r][c] = true;
+ }
+ }
+ return grid2;
+ }
+
+ public static void main(String[] args){
+ boolean[][] world = gen();
+ show(world);
+ System.out.println();
+ world = nextGen(world);
+ show(world);
+ Scanner sc = new Scanner(System.in);
+ while(sc.nextLine().length() == 0){
+ System.out.println();
+ world = nextGen(world);
+ show(world);
+
+ }
+ }
+
+ public static boolean[][] nextGen(boolean[][] world){
+ boolean[][] newWorld
+ = new boolean[world.length][world[0].length];
+ int num;
+ for(int w = 0; w < world.length; w++){
+ for(int l = 0; l < world[0].length; l++){
+ num = numNeighbors(world, w, l);
+ if( occupiedNext(num, world[w][l]) )
+ newWorld[w][l] = true;
+ }
+ }
+ return newWorld;
+ }
+
+ public static boolean occupiedNext(int numNeighbors, boolean occupied){
+ if(occupied && ((numNeighbors == 2) || (numNeighbors == 3)))
+ return true;
+ else if ((!occupied) && (numNeighbors == 3))
+ return true;
+ else
+ return false;
+ }
+
+ private static int numNeighbors(boolean[][] world, int row, int col) {
+ int num2 = world[row][col] ? -1 : 0;
+ for(int r1 = (row - 1); r1 <= (row + 1); r1++)
+ for(int c1 = (col - 1); c1 <= (col + 1); c1++)
+ if((inbounds(world, r1, c1)) && (world[r1][c1]) )
+ num2++;
+
+ return num2;
+ }
+
+ private static boolean inbounds(boolean[][] world, int i, int c2) {
+ return (i >= 0) && (i < world.length) && (c2 >= 0) &&
+ (c2 < world[0].length);
+ }
+
+
+
+}
\ No newline at end of file
diff --git a/examples/SideEffects.java b/examples/SideEffects.java
new file mode 100644
index 0000000..11a386d
--- /dev/null
+++ b/examples/SideEffects.java
@@ -0,0 +1,15 @@
+public class SideEffects
+{
+ static int x, y;
+
+ public static void foo() {
+ x = 0;
+ y = 3;
+ int i = 0;
+ while(f() < y) { x = f(); }
+ x++;
+ x++;
+ }
+
+ public static int f() { y++; return 3; }
+}
\ No newline at end of file
diff --git a/examples/TryCatchFinally.java b/examples/TryCatchFinally.java
new file mode 100644
index 0000000..1d8e563
--- /dev/null
+++ b/examples/TryCatchFinally.java
@@ -0,0 +1,40 @@
+// Source: http://stackoverflow.com/questions/3779285/exception-thrown-in-catch-and-finally-clause
+
+
+class MyExc1 extends Exception {}
+class MyExc2 extends Exception {}
+class MyExc3 extends MyExc2 {}
+
+public class TryCatchFinally {
+
+ public static void foo() throws Exception {
+ int x ;
+ try {
+ x = 1;
+
+ try
+ {
+ throw new MyExc1();
+ }
+ catch (Exception y)
+ {
+ }
+ finally
+ {
+ x = 3;
+ throw new Exception();
+ }
+ }
+ catch (Exception i)
+ {
+ throw new MyExc2();
+ }
+ finally {
+ x = 2;
+ }
+ }
+
+ static void q() throws Exception {
+
+ }
+}
\ No newline at end of file
--
GitLab