diff --git a/cobj/typeck.c b/cobj/typeck.c
index 0d75c0d0..1130c5da 100644
--- a/cobj/typeck.c
+++ b/cobj/typeck.c
@@ -7623,7 +7623,7 @@ void cb_emit_search_all(cb_tree table, cb_tree at_end, cb_tree when, cb_tree stm
 
 void cb_emit_setenv(cb_tree x, cb_tree y)
 {
-	cb_emit(cb_build_funcall_2("CobolTerminal.setEnvironment", x, y));
+	cb_emit(cb_build_funcall_2("CobolUtil.setEnv", x, y));
 }
 
 void cb_emit_set_to(cb_tree vars, cb_tree x)
diff --git a/libcobj/src/jp/osscons/opensourcecobol/libcobj/call/CobolResolve.java b/libcobj/src/jp/osscons/opensourcecobol/libcobj/call/CobolResolve.java
index 4bbe80fd..03358f53 100644
--- a/libcobj/src/jp/osscons/opensourcecobol/libcobj/call/CobolResolve.java
+++ b/libcobj/src/jp/osscons/opensourcecobol/libcobj/call/CobolResolve.java
@@ -29,6 +29,7 @@
 import java.util.Map.Entry;
 import java.util.UUID;
 import jp.osscons.opensourcecobol.libcobj.common.CobolConstant;
+import jp.osscons.opensourcecobol.libcobj.common.CobolUtil;
 import jp.osscons.opensourcecobol.libcobj.data.AbstractCobolField;
 import jp.osscons.opensourcecobol.libcobj.data.CobolDataStorage;
 import jp.osscons.opensourcecobol.libcobj.exceptions.CobolCallException;
@@ -72,7 +73,7 @@ public static void CobolInitCall() {
     //		call_entry_buff = cob_malloc (COB_SMALL_BUFF);
     //		call_entry2_buff = cob_malloc (COB_SMALL_BUFF);
 
-    s = System.getenv("COB_LOAD_CASE");
+    s = CobolUtil.getEnv("COB_LOAD_CASE");
     if (s != null) {
       String sU = s.toUpperCase();
       if (sU.equals("LOWER")) {
@@ -82,7 +83,7 @@ public static void CobolInitCall() {
       }
     }
 
-    s = System.getenv("COB_LIBRARY_PATH");
+    s = CobolUtil.getEnv("COB_LIBRARY_PATH");
     if (s == null || s.equals("")) {
       buf = "." + System.getProperty("path.separator") + CobolConstant.COB_LIBRARY_PATH;
     } else {
@@ -95,11 +96,11 @@ public static void CobolInitCall() {
     }
     setLibraryPath(buf);
 
-    s = System.getenv("COB_PACKAGE_PATH");
+    s = CobolUtil.getEnv("COB_PACKAGE_PATH");
     setPackagePath(s);
 
     // TODO プリロードの扱いを検討する
-    s = System.getenv("COB_PRE_LOAD");
+    s = CobolUtil.getEnv("COB_PRE_LOAD");
 
     // 用途不明
     //		call_buffer = cob_malloc (CALL_BUFF_SIZE);
diff --git a/libcobj/src/jp/osscons/opensourcecobol/libcobj/common/CobolUtil.java b/libcobj/src/jp/osscons/opensourcecobol/libcobj/common/CobolUtil.java
index 2c4d2eaf..244a2e71 100644
--- a/libcobj/src/jp/osscons/opensourcecobol/libcobj/common/CobolUtil.java
+++ b/libcobj/src/jp/osscons/opensourcecobol/libcobj/common/CobolUtil.java
@@ -21,6 +21,7 @@
 import java.time.DateTimeException;
 import java.time.LocalDateTime;
 import java.util.Calendar;
+import java.util.Properties;
 import java.util.Scanner;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -76,6 +77,8 @@ abstract class handlerlist {
   public static final int FERROR_CHAINING = 2;
   public static final int FERROR_STACK = 3;
 
+  private static Properties envVarTable = new Properties();
+
   /**
    * libcob/common.cのcob_check_envの実装
    *
@@ -88,7 +91,7 @@ public static int checkEnv(String name, String value) {
       return 0;
     }
 
-    String s = System.getenv(name);
+    String s = CobolUtil.getEnv(name);
     if (s != null) {
       if (s.contentEquals(value)) {
         return 1;
@@ -108,10 +111,11 @@ public static void cob_init(String[] argv, boolean cob_initialized) {
       CobolInspect.initString();
       CobolFile.cob_init_fileio();
       CobolIntrinsic.init();
+      CobolUtil.envVarTable = new Properties();
 
       for (int i = 0; i < 8; ++i) {
         String envVariableName = String.format("COB_SWITCH_%d", i + 1);
-        String envValue = System.getenv(envVariableName);
+        String envValue = CobolUtil.getEnv(envVariableName);
         if (envValue == null) {
           CobolUtil.cobSwitch[i] = false;
         } else {
@@ -121,7 +125,7 @@ public static void cob_init(String[] argv, boolean cob_initialized) {
     }
 
     cal = Calendar.getInstance();
-    String s = System.getenv("COB_DATE");
+    String s = CobolUtil.getEnv("COB_DATE");
     if (s != null) {
       Scanner scan = new Scanner(s);
       Pattern p = Pattern.compile("([0-9]{4})/([0-9]{2})/([0-9]{2})");
@@ -150,7 +154,7 @@ public static void cob_init(String[] argv, boolean cob_initialized) {
       }
     }
 
-    s = System.getenv("COB_VERBOSE");
+    s = CobolUtil.getEnv("COB_VERBOSE");
     if (s != null && s.length() > 0 && (s.charAt(0) == 'y' || s.charAt(0) == 'Y')) {
       CobolUtil.cob_verbose = true;
     }
@@ -226,7 +230,7 @@ public static void runtimeError(String s) {
    * @param envval
    */
   public static void getEnvironment(AbstractCobolField envname, AbstractCobolField envval) {
-    String p = System.getenv(envname.fieldToString());
+    String p = CobolUtil.getEnv(envname.fieldToString());
     if (p == null) {
       CobolException.setException(CobolExceptionId.COB_EC_IMP_ACCEPT);
       p = " ";
@@ -668,4 +672,34 @@ public static void setLocation(
       System.err.flush();
     }
   }
+
+  public static String getEnv(String envVarName) {
+    String envVarInTable = CobolUtil.envVarTable.getProperty(envVarName);
+    if (envVarInTable != null) {
+      return envVarInTable;
+    } else {
+      return System.getenv(envVarName);
+    }
+  }
+
+  /**
+   * get environemnt variable
+   *
+   * @param envVarName the name of an environment variable.
+   * @return the value of envVarName, or null if the envVarName is not defined.
+   */
+  public static void setEnv(String envVarName, String envVarValue) {
+    CobolUtil.envVarTable.setProperty(envVarName, envVarValue);
+  }
+
+  /**
+   * Set environemnt variable
+   *
+   * @param envVarName the name of an environment variable. The leading and trailing spaces are
+   *     ignored.
+   * @param envVarValue the value of an environment variable to be set.
+   */
+  public static void setEnv(AbstractCobolField envVarName, AbstractCobolField envVarValue) {
+    CobolUtil.envVarTable.setProperty(envVarName.getString().trim(), envVarValue.getString());
+  }
 }
diff --git a/libcobj/src/jp/osscons/opensourcecobol/libcobj/file/CobolFile.java b/libcobj/src/jp/osscons/opensourcecobol/libcobj/file/CobolFile.java
index f154d2e1..6cef8532 100644
--- a/libcobj/src/jp/osscons/opensourcecobol/libcobj/file/CobolFile.java
+++ b/libcobj/src/jp/osscons/opensourcecobol/libcobj/file/CobolFile.java
@@ -333,7 +333,7 @@ public static int invokeFun(
     byte[] tmpfnstatus = String.format("%02d", 0).getBytes();
     byte[] pTmpfnstatus = tmpfnstatus;
     String p_excpcode = "";
-    String s = System.getenv(TIS_DEFINE_USERFH);
+    String s = CobolUtil.getEnv(TIS_DEFINE_USERFH);
     int iRet = 0;
     char ret = '0';
     int status1 = 0;
@@ -645,7 +645,7 @@ public void open(int mode, int sharing, AbstractCobolField fnstatus) {
             file_open_env[j] = src[src_i + 1 + j];
           }
           file_open_env[i - 1] = 0;
-          String p = System.getenv(new String(Arrays.copyOfRange(file_open_env, 0, i - 1)));
+          String p = CobolUtil.getEnv(new String(Arrays.copyOfRange(file_open_env, 0, i - 1)));
           if (p != null) {
             byte[] pbytes = p.getBytes();
             for (int j = 0; j < pbytes.length; ++j) {
@@ -669,7 +669,7 @@ public void open(int mode, int sharing, AbstractCobolField fnstatus) {
         for (i = 0; i < NUM_PREFIX; i++) {
           byte[] file_open_buff = String.format("%s%s", prefix[i], file_open_name).getBytes();
           String p;
-          if ((p = System.getenv(new String(file_open_buff))) != null) {
+          if ((p = CobolUtil.getEnv(new String(file_open_buff))) != null) {
             file_open_name_bytes = p.getBytes();
             break;
           }
@@ -690,8 +690,8 @@ public void open(int mode, int sharing, AbstractCobolField fnstatus) {
         was_not_exist = true;
         if (mode != COB_OPEN_OUTPUT
             && !this.flag_optional
-            && (mode != COB_OPEN_I_O || !System.getenv(COB_IO_CREATES).equals("yes"))
-            && (mode != COB_OPEN_EXTEND || !System.getenv(COB_EXTEND_CREATES).equals("yes"))) {
+            && (mode != COB_OPEN_I_O || !CobolUtil.getEnv(COB_IO_CREATES).equals("yes"))
+            && (mode != COB_OPEN_EXTEND || !CobolUtil.getEnv(COB_EXTEND_CREATES).equals("yes"))) {
           saveStatus(COB_STATUS_35_NOT_EXISTS, fnstatus);
           return;
         }
@@ -1319,7 +1319,7 @@ protected void cob_sync(CobolFile f, int mode) {
 
   /** libcob/fileio.cのcob_init_fileioの実装 */
   public static void cob_init_fileio() {
-    String s = System.getenv("COB_SYNC");
+    String s = CobolUtil.getEnv("COB_SYNC");
     if (s != null) {
       if (s.charAt(0) == 'Y' || s.charAt(0) == 'y') {
         cob_do_sync = 1;
@@ -1329,15 +1329,15 @@ public static void cob_init_fileio() {
       }
     }
 
-    cob_file_path = System.getenv("COB_FILE_PATH");
+    cob_file_path = CobolUtil.getEnv("COB_FILE_PATH");
     if (cob_file_path != null) {
       if (cob_file_path.charAt(0) == '\0' || cob_file_path.charAt(0) == ' ') {
         cob_file_path = null;
       }
     }
 
-    cob_ls_nulls = System.getenv("COB_LS_NULLS");
-    cob_ls_fixed = System.getenv("COB_LS_FIXED");
+    cob_ls_nulls = CobolUtil.getEnv("COB_LS_NULLS");
+    cob_ls_fixed = CobolUtil.getEnv("COB_LS_FIXED");
 
     file_open_env = new byte[COB_SMALL_BUFF];
     // file_open_name = new byte[COB_SMALL_BUFF];
@@ -1474,7 +1474,7 @@ public void cob_delete_file(AbstractCobolField fnstatus) {
             file_open_env[j] = src[src_i + 1 + j];
           }
           file_open_env[i - 1] = 0;
-          String p = System.getenv(new String(Arrays.copyOfRange(file_open_env, 0, i - 1)));
+          String p = CobolUtil.getEnv(new String(Arrays.copyOfRange(file_open_env, 0, i - 1)));
           if (p != null) {
             byte[] pbytes = p.getBytes();
             for (int j = 0; j < pbytes.length; ++j) {
@@ -1498,7 +1498,7 @@ public void cob_delete_file(AbstractCobolField fnstatus) {
         for (i = 0; i < NUM_PREFIX; i++) {
           byte[] file_open_buff = String.format("%s%s", prefix[i], file_open_name).getBytes();
           String p;
-          if ((p = System.getenv(new String(file_open_buff))) != null) {
+          if ((p = CobolUtil.getEnv(new String(file_open_buff))) != null) {
             file_open_name_bytes = p.getBytes();
             break;
           }
diff --git a/libcobj/src/jp/osscons/opensourcecobol/libcobj/file/CobolFileSort.java b/libcobj/src/jp/osscons/opensourcecobol/libcobj/file/CobolFileSort.java
index 13d6578f..4bbee6cd 100644
--- a/libcobj/src/jp/osscons/opensourcecobol/libcobj/file/CobolFileSort.java
+++ b/libcobj/src/jp/osscons/opensourcecobol/libcobj/file/CobolFileSort.java
@@ -167,9 +167,9 @@ private static CobolItem newItem(CobolSort hp) {
   private static FileIO tmpfile() {
     String s;
     FileIO fp = new FileIO();
-    if ((s = System.getenv("TMPDIR")) == null
-        && (s = System.getenv("TMP")) == null
-        && (s = System.getenv("TEMP")) == null) {
+    if ((s = CobolUtil.getEnv("TMPDIR")) == null
+        && (s = CobolUtil.getEnv("TMP")) == null
+        && (s = CobolUtil.getEnv("TEMP")) == null) {
       s = "/tmp";
     }
     if (cob_process_id.equals("")) {
diff --git a/libcobj/src/jp/osscons/opensourcecobol/libcobj/termio/CobolTerminal.java b/libcobj/src/jp/osscons/opensourcecobol/libcobj/termio/CobolTerminal.java
index 4e7049cf..e7da4e81 100644
--- a/libcobj/src/jp/osscons/opensourcecobol/libcobj/termio/CobolTerminal.java
+++ b/libcobj/src/jp/osscons/opensourcecobol/libcobj/termio/CobolTerminal.java
@@ -229,7 +229,7 @@ public static void displayEnvValue(AbstractCobolField f) {
   public static void acceptEnvironment(AbstractCobolField f) {
     String p = null;
     if (CobolUtil.cobLocalEnv != null) {
-      p = System.getenv(CobolUtil.cobLocalEnv);
+      p = CobolUtil.getEnv(CobolUtil.cobLocalEnv);
     }
 
     if (p == null) {
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 512c6437..1a71b87a 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -163,7 +163,8 @@ misc_DEPENDENCIES = \
 	misc.src/high-low-value.at \
 	misc.src/move-sign-leading-separate-to-signed-comp3.at \
 	misc.src/java-interface.at \
-	misc.src/comp3-int.at
+	misc.src/comp3-int.at \
+	misc.src/env.at
 
 EXTRA_DIST = $(srcdir)/package.m4 \
 	$(TESTS) \
diff --git a/tests/Makefile.in b/tests/Makefile.in
index b8ce468a..7dc9475b 100644
--- a/tests/Makefile.in
+++ b/tests/Makefile.in
@@ -702,7 +702,8 @@ misc_DEPENDENCIES = \
 	misc.src/high-low-value.at \
 	misc.src/move-sign-leading-separate-to-signed-comp3.at \
 	misc.src/java-interface.at \
-	misc.src/comp3-int.at
+	misc.src/comp3-int.at \
+	misc.src/env.at
 
 EXTRA_DIST = $(srcdir)/package.m4 \
 	$(TESTS) \
diff --git a/tests/misc.at b/tests/misc.at
index b31872a2..f42529d3 100644
--- a/tests/misc.at
+++ b/tests/misc.at
@@ -24,4 +24,5 @@ m4_include([comp3-is-numeric.at])
 m4_include([high-low-value.at])
 m4_include([move-sign-leading-separate-to-signed-comp3.at])
 m4_include([java-interface.at])
-m4_include([comp3-int.at])
\ No newline at end of file
+m4_include([comp3-int.at])
+m4_include([env.at])
diff --git a/tests/misc.src/env.at b/tests/misc.src/env.at
new file mode 100644
index 00000000..f5768bdb
--- /dev/null
+++ b/tests/misc.src/env.at
@@ -0,0 +1,35 @@
+AT_SETUP([Environment variable])
+
+AT_DATA([prog.cbl],[
+       IDENTIFICATION   DIVISION.
+       PROGRAM-ID.      prog.
+       DATA             DIVISION.
+       WORKING-STORAGE  SECTION.
+       01 env-var-name PIC X(14) value "COB_ENV_TEST".
+       01 env-var-name1 PIC X(12) value "COB_ENV_TEST".
+       01 env-var-value PIC X(10).
+       PROCEDURE        DIVISION.
+       accept env-var-value from environment env-var-name
+       end-accept.
+       display env-var-value.
+
+       set environment env-var-name to "world".
+       accept env-var-value from environment env-var-name
+       end-accept.
+       display env-var-value.
+
+       initialize env-var-value.
+       set environment env-var-name1 to "world".
+       accept env-var-value from environment env-var-name1
+       end-accept.
+       display env-var-value.
+])
+
+AT_CHECK([${COBJ} prog.cbl])
+AT_CHECK([COB_ENV_TEST=hello java prog], [0],
+[hello     @&t@
+world     @&t@
+world     @&t@
+])
+
+AT_CLEANUP